Can someone help me ASAP???!!

Question

asked Jul 2, 2021 131k views

2 Answers

MrPink · Answer 1 · 2021-07-04T19:23:06+0000

25x² - 49y²

Explanation:

To Find:

The product of (5x - 7y)(5 x + 7)

How to solve:

Just need to use the formula of a² - b² = (a+b)(a-b)

let's assume a = 5x and b = 7x

Solution:

(5x - 7y)(5 x + 7) = (5x)² - (7y)²

= 25x² - 49y²

Hence required answer is 25x² - 49y².

Vek · Answer 2 · 2021-07-06T16:57:07+0000

Answer:

25x ²−49y ²

Explanation:

We need to find product of (5x+7)(5x−7y)

By using identity (a+b)(a−b)=a −b ²

We have a=5x,b=7y

Thus (5x+7y)(5x−7y)=(5x) ²−(7y)

let me know if it was helpful