Question

I know that it’s a lot but I really need help and tomorrow is my exam and I am not able to understand. Please help at least explain. I’ll mark you as the brainliest.

Answer 1

Answer:

9)

.a^2b-b^3=b(a^2-b^2)

b (a+b)(a-b) Ans

101^2 x 100-100^3

100 (101^2-100^2 )

100 (10l+100) (101-100)

100x201x1 =20100 Ans

625-x ^4=5^4-x ^4

= ( 5^2+X^2)(5^2-x^2)

= (25+x^2)(5+x) (5-x) Ans