Question

Verify the given identities using any no. from this formula. 1.(a+b)²=a²+2ab+b². 2.(a-b)=a²-2ab+b². 3.(a²-b²)=(a+b)(a-b). 4.(x+a)(a+b)=x²+(a+b)x+ab​

Answer 1

As given in the Question- (a+b)2=a2+2ab+b2

Using this Identity,

(2p+3q)2 =(2p)2+2(2p×3q)+(3q)2

= 4p2+2(6pq)+9q2

= 4p2+12pq+9q2