Question

What is the factored form of the expression?

k^2 – 9h^2

A. (k + 3h)(k + 3h)

B. h^2(k + 3)(k – 3)

C. (k + 3h)(k – 3h)

D. (k – 3h^2)(k + 3)

A, B, C, or D? Please explain (:

Answer 1

first we need to correct the form of 9 which should be 3^2
now since everything is in squared form we can apply the formula a^2+b^2 = (a-b)(a+b)

k^2- (3h)^2

(k-3h)(k+3h)

C

Answer 2

c

Answer 3

Thanks a lot guys (:

Answer 4

k^2 - 9h^2
k^2 - (3h)^2
=(k - 3h) (k+3h) from the formula a^2-b^2 = (a-b)(a+b)