A community for students.
Here's the question you clicked on:
 0 viewing
KG1234
 3 years ago
solve for x: (4x3)^2=15
KG1234
 3 years ago
solve for x: (4x3)^2=15

This Question is Closed

NickR
 3 years ago
Best ResponseYou've already chosen the best response.0so (4x3)^2=(4x3)(4x3) right

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0(4x3)(4x3) = 4x(4x  3)  3(4x  3) = 16x^2  12x  12x +9 = 16x^2  24x + 9

NickR
 3 years ago
Best ResponseYou've already chosen the best response.0but its not = to 0 its =15

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0(4x3)(4x3) = 4x(4x  3)  3(4x  3) = 16x^2  12x  12x +9 = 16x^2  24x + 9

NickR
 3 years ago
Best ResponseYou've already chosen the best response.0my bad see you already did that

NickR
 3 years ago
Best ResponseYou've already chosen the best response.0so now is there a common number that they are all divisible by?

KG1234
 3 years ago
Best ResponseYou've already chosen the best response.0wait im at 16x^224x+9=15 right?

NickR
 3 years ago
Best ResponseYou've already chosen the best response.0ya then add the 15 to get 16x^224x+24=0

NickR
 3 years ago
Best ResponseYou've already chosen the best response.0now find a common denominator

KG1234
 3 years ago
Best ResponseYou've already chosen the best response.0so does that then turn into 2x^23x=3=0?

Hero
 3 years ago
Best ResponseYou've already chosen the best response.016x^224x+9=15 16x^2  24x + 24 = 0 8(2x^2  3x + 3) = 0 2x^2  3x + 3 = 0 x^2  3/2 + 3/2 = 0 x^2  3/2x = 3/2 x^2 3/2x + 9/16 = 3/2 + 9/16 (x  3/4)^2 = 15/16 Solution is imaginary

KG1234
 3 years ago
Best ResponseYou've already chosen the best response.0the answer is 3 + or  the square root of 15 divided by4 but idk how to get it

NickR
 3 years ago
Best ResponseYou've already chosen the best response.0i would do the quadratic formula

KG1234
 3 years ago
Best ResponseYou've already chosen the best response.0b + or  the square root of b^2 4ac divided by 2a?

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0\[\frac{b \pm \sqrt{b^2  4ac}}{2a}\]

KG1234
 3 years ago
Best ResponseYou've already chosen the best response.0i got it thanks to both of you!

Hero
 3 years ago
Best ResponseYou've already chosen the best response.0You got what? Mind sharing what you got?

KG1234
 3 years ago
Best ResponseYou've already chosen the best response.03 + or  the square root of 15 divided by 4

KG1234
 3 years ago
Best ResponseYou've already chosen the best response.03+ or  i square root 15 divided by 4 sorry i forgot the "i"
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.