Question

using identify find yhe product :(5y-3)(5y+3)​

Answer 1

Answer:

(3x-5y)(3x-5y)=(3x-5y) square

As per the identity ( a-b)square=a^2-2ab+b^2  

3x^2-2(3x*5y)+5y^2

9x^2-30xy+25y^2

Answer 2

We should use the formula (a+b) (a-b) formula

(5y-3)(5y+3) = (5y)^2 - (3)^2

25y^2 - 9