A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 one year ago
(2x – 1)(x + 7) = 0
Did i do this right guessing I distribute
2x*x = 2x^2 + 2x*7=14.
1* x = x 1*7 = 7
2x^2 +14+ x 7
2x^2 +x = 2x^3
14 7= 7
2x^3+ 7
anonymous
 one year ago
(2x – 1)(x + 7) = 0 Did i do this right guessing I distribute 2x*x = 2x^2 + 2x*7=14. 1* x = x 1*7 = 7 2x^2 +14+ x 7 2x^2 +x = 2x^3 14 7= 7 2x^3+ 7

This Question is Closed

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0Are we solving for x?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Solve each quadratic equation. Show your work. that's what it says.

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0so they want the value of x?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0(2x – 1)(x + 7) = 0 We would use the 0 product property right? @jim_thompson5910 :/ am i right?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1437707414800:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2dw:1437707424790:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2solve each equation for x

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0@Ashtaroth You are doing more work than needed

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0More work then needed? What do you mean?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0You dont need to do all that work just do what @jim_thompson5910 drew

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So after that i'm finish?

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0yes u will have 2 solution's

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1after you solve those equations .. yes.. there should be x = (two numbers)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1dw:1437707649100:dw

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Guess i was wrong then :P

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I think i got it though. Thank you all for you'r help :)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1you were distributing... not solving for x . the problem is already factored

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0So.. My answer was right or wrong?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1your attempt was way off

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0Wrong you didnt even solve for x

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Heh.. So i was wrong?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Okay. so i'm suppose to solve the quadratic equation. then show my work.

pooja195
 one year ago
Best ResponseYou've already chosen the best response.0dw:1437708079679:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2focus on just 2x1 = 0 what number can we replace x with to make the equation true?

LynFran
 one year ago
Best ResponseYou've already chosen the best response.1you were suppose to work the problem to solve for x... here is an exampledw:1437715265345:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.22x1 = 0 2*(2)1 = 0 ... replace x with 2 4  1 = 0 5 = 0 ... this is a false equation so x = 2 isn't the answer

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.2look at what LynFran posted

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1so we need to find that x that makes the statement true.. @LynFran provided a good example :)

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1consider 2x1 = 0 we need to solve for x. ... do we add, subtract, multiply , or divide?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1yeah. add what number to both sides?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.02x+1 and 1+1? 3x =0?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1umm we can't combine 2x +1 however we do add 1 to both sides 2x1=0 2x=1 now how do we get x by itself

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Hmm. subtract 2 from both sides?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1yeah 2x=1 divide 2 from both sides 2x=1   2 2 x = 1/2

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1now for x+7=0 how do we get x by itself?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0add the x with the 7 then divide by 7?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1we don't have to do division... for x+7=0 because there is no number attached to the variable on the previous problem we had to divide because we want x by itself we just have x+7=0

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1what's the opposite of addition?

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1yes. just subtract 7 from both sides

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1whoa we can't have 7/0 that's undefinded

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1x+ 7 = 0 7 7 x+77 =07 what is 77 what's 07

UsukiDoll
 one year ago
Best ResponseYou've already chosen the best response.1so our two solutions are x= 7 and x =1/2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Alright do we plug them in or our we finish?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Thanks XD I am tired. Good night
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.