(4P+11)(4P-11) find the product?

Question

Is this the correct answer?

16p^2-121?

Thank you ALL for your help. I am trying to understand this as for I have finals in 3 weeks! =)~

Answer 1

You are 100% right.
(4P+11)(4P-11)
=(4P)^2-(11)^2
=16P^2-121

Answer 2

hi

yes your answer was corect

this problem is in the for of a^2-b^2 which upon expanding will result in (a+b) (a-b)
so 4p^2 =16p^2
and 11^2=121

so the answer is 16p^2-121

Answer 3

Yes

Answer 4

Yes. This is the expansion of the difference of two squares.

i.e. (a+b)(a-b) = a^2 + ab - ab -b^2 = a^2 - b^2

Thus, when you have such an equation, just square both terms and put a negative sign in front of the second value.

Answer 5

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Answer 6

Yes it is correct. You can get the answer anytime you multiply two binomials by using the FOIL method. First...outside....inside....and last. Or it is just distributing the factors.

ray

Answer 7

Yep

You can do this by either expanding it all out, or by applying the difference of two squares rule (in reverse).

Answer 8

yes