Question

Преобразовать выражение:
6,25а^2-100
4/9a^2b^2-25/9x^2y^2

Answer 1

6,25a²-100=(2,5a-10)(2,5a+10)
4/9*a²b²-25/9*x²y²=(2/3*ab-5/3*xy)(2/3*ab+5/3*xy)