Question

please answer the question:

SOLVE USING IDENTITIES:
(a) (5x+3)(5x+3)
(b) (7a+5)(7a-5)​

Answer 1

Step-by-step explanation:

b) (7a+5)(7a-5)

using x^2-y^2=(x+y)(x-y)

x=7a y=5

(7a+5)(7a-5)

7a^2-5^2