Question

(4a+7b)² -(3a+8b)² Please solve for me​

Answer 1

$\huge\mathbb\green{ANSWER!!!!}$

Here, we use the formula of

• (a+b)² = a² + b² + 2ab

Now, according to question -

• (4a+7b)² -(3a+8b)²

• { (4a)² + (7b)² + 2 × 4a × 7b } - { (3a)² + (8b)² + 2 × 3a × 8b }

• 16a² + 49b² + 56ab - ( 9a² + 64b² + 48ab)

• 16a² + 49b² + 56ab - 9a² - 64b² - 48ab

• 7a² - 15b² + 8ab

7a² - 15b² + 8ab is the answer.

Answer 2

Answer:

$(7a - b)(a - 15b)$