Question

please answer me Harry up

Answer 1

$i) \: x ^{2} - y ^{2} \div 25 \\ using \: identity \\ (a + b)(a - b) = a ^{2} - b ^{2} \\ (x + y \div 5)(x - y \div 25)$
hope it may help you i knew all parts but i had less time so idid only ...
plzzz mark it as brainliest

Answer 2

Hey, mate my another mate had solved your (I) question. I will give you the hint to solve another question.So,

For solving (ii) use the identity (a+b)^3 = a^3+b^3+3a^2b+3ab^2

For solving (iii) use the identity a^2 - b^2 = (a+b)(a-b)

For solving (iv) use the identity (x+y+z)^2 = x2 + y2 + z2 + 2xy + 2yz + 2zx.

okkkk

I think this will help you out & sorry but I also don't have so much time because I'm a board student.