Question

algebraic identities and factorisation of algebraic expression​

Answer 1

Answer:

(a+b)² = a² +b²+2ab

(a-b)²= a²+b²-2ab

(a+b)(a-b)=a²-b²

(x+a)(x+b)= x²+(a+b)x+ab

Answer 2

Answer:

1.(a+b)²= a²+ b²+2ab

2.(a-b)²= a²-2ab +b²

3.(a+b)(a-b)= a²-b²

4.( a+b+c) = a+b+c+2ab+2ba+2ca

5.(x+a) (x+b) = x²+ax+bx+ab

Step-by-step explanation: