Question

the expression (9x²- 25)²- (9x²+25)² is equivalent to - (t²) where t is a monomial.​

Answer 1

Answer:

It is an a^2-b^2 identity= (a+b)(a-b)

(9x^2-25 +9x^2+25)(9x^2-25-9x^2-25)

=18x^2×(-50)

=-90x^2 equivalent to-(t^2)