Find the product.
-$$( - 8 a - 9 b ) ( 9 a + 8 b )$$
A) $- 72 a ^ { 2 } - 145 a b - 72 b ^ { 2 }$
B) $- 72 a ^ { 2 } + 145 a b - 72 b ^ { 2 }$
C) $- 72 a ^ { 2 } + 17 a b - 72 b ^ { 2 }$
D) $- 72 a ^ { 2 } - 72 b ^ { 2 }$

Question

Quizplus · Accepted Answer

Using the FOIL method, we have:```(-8a - 9b)(9a + 8b) = -72a^2 - 64ab - 81ab - 72b^2 = -72a^2 - 145ab - 72b^2```

Find the Product (−8a−9b)(9a+8b)( - 8 a - 9 b ) ( 9 a + 8 b )(−8a−9b)(9a+8b)

Find the Product $( - 8 a - 9 b ) ( 9 a + 8 b )$