( a - b ) ^ 2 = a ^ 2 - 2 * a * b + b ^ 2
(4 x - 3 y ) ^ 2 =
(4 x ) ^ 2 - 2 * 4 x * 3 y + ( 3 y ) ^ 2 =
16 x ^ 2 - 24 x y + 9 y ^ 2
(4x-3y)2 Simplify the expression above. Which of the following is correct?
A. 16x2 + 9y2
B. 16x2-9y2
C. 16x2 -24xy -9y2
D. 16x2 -24xy+9y2
2 answers
Dear Roberta,
the answer should be D
recall the identity
(a-b)^2
= a^2 - 2ab + b^2
Hope it helps
Wishing you the best of luck
barry
the answer should be D
recall the identity
(a-b)^2
= a^2 - 2ab + b^2
Hope it helps
Wishing you the best of luck
barry