Question

ppl who know ans only help me out!!

Answer 1

Answer:

x^3+5x^2+5x.

Step-by-step explanation:

(x^2-5)×(x+5)+25

:-. By multiplying (x^2-5) and (x+5),

We get----. x^3+5x^2+5x-25

So,

x^3+5x^2+5x-25+25

= x^3+5x^2+5x.

This is the answer.

please mark me the brainliest

Answer 2

Answer:

i) answer is x^3 + 5x^2 - 5x

ii) answer is 3x^2 - y^2 +4xy

Step-by-step explanation:

i). (x^2 - 5) (x + 5 ) + 25 = x^3 + 5x^2 - 5x - 25 + 25

= x^3 + 5x^2 - 5x

ii).(x+y)(2x+y) + (x+2y)(x-y)

=2x^2+ xy+2xy+y^2+x^2-xy+2xy-2y^2

=3x^2-y^2+4xy