Question

6.
Expand the following using suitable identities.
(x² + y^2)(x^2-y²)

Answer 1

Answer:

(i)(x² + y²)(x - y)(x + y)

(ii)0.81p² + 0.9pq + 0.25q²

Step-by-step explanation:

(i) (x²+y²)(x²-y²)                             (a²-b²)= (a)²-(b)²

=> (x² + y²){(x)²-(y)²}                            

=>(x² + y²)(x - y)(x + y)

(ii) (0.9p+0.5q)²​

=> (0.9p)² + 2(0.9p × 0.5q) + (0.5q)²            (a+b)²=a²+2ab+b²

=> 0.81p² + 0.9pq + 0.25q²

HOPE THE ANSWER HELPED!!