Question

3) Using the identity for difference of squares, expand the following.

(i) (25p²r4 – 36r²] ​

Answer 1

Answer:

(5pr^2 + 6r) (5pr^2 - 6r)

Step-by-step explanation:

25p^2r^4 - 36r^2

= (5pr^2)^2 - (6r)^2 Since, a^2 - b^2 = (a+b)(a-b)

= (5pr^2 + 6r) (5pr^2 - 6r)