Question

please answer maths​

Answer 1

Factorise the following....

Answers are.....

(i)x^2 + 2xy + y^2 - 4

=(x^2 + 2xy + y^2) - 4

(x^2 + 2xy + y^2) - 4 =(x + y)^2 - 2^2

(x^2 + 2xy + y^2) - 4 =(x + y)^2 - 2^2 =(x + y + 2)(x + y - 2)

(ii)a^4 - 81

=(a^2)^2 - 9^2

a^2)^2 - 9^2 =(a^2 + 9)(a^2 - 9)

a^2)^2 - 9^2 =(a^2 + 9)(a^2 - 9) =(a^2 + 9)(a - 3)(a + 3)

iff uh don't get itt....then go through the image attached........