A community for students.
Here's the question you clicked on:
 0 viewing
anonymous
 3 years ago
Simplify (4x − 5)^2.
anonymous
 3 years ago
Simplify (4x − 5)^2.

This Question is Closed

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0(a+b)^2=a^2 + b^2 + 2ab

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0does that mean "multiply"? start with \[(4x+5)(4x+5)\] and do four multiplications

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0(ab)^2 = a^2 + b^2 2ab

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0oops rather \[(4x5)(4x5)\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0do four multiplications, combine like terms, and then tell your teacher (gently) that there is nothing "simpler" about your result than there is in \((4x5)^2\)

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0four multiplications i will write them out

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0\[(4x5)(4x5)=4x\times 4x5\times 4x5\times 4x+5\times 5\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0(4x5)^2 = 16x^2 40x +25.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0then \(4x\times 4x=16x^2\) \(5\times 4x5\times 4x=20x20x=40x\) \((5)\times (5)=25\) final answer is \[16x^240x+25\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0now factorize it or solve by formula \[x=b \pm \sqrt{b^{2}4ac}/2a\]

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0no marmar it's 16x^2  40x +25. not 16x

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0now use quadratic formula or apply factorization method.it's up to u

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0U got it marmar? just use formula (ab)^2 = a^2 + b^2 2ab. then find x by factorization or quadratic formula.Simple!
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.