Question

Brainliest giving to who gets this CORRECT first. Check all that apply.

Answer 1

Answer:

D.

Step-by-step explanation:

a² -b²= (a-b)(a+b)

100x²-49y²= (10x-7y)(10x+7y)

Answer 2

Answer:

Answer is D

Step-by-step explanation:

The difference of the squares method is a short-cut method that is expressed a2 - b2 = ( a + b ) *(a-b). In this case, a2 and b2 should be perfect squares in which a and b are the square roots. In this case, 100 and 49 are perfect squares, hence the answer is D.