Question

Разложите на множители:

а)16x⁴-81
б)x²-x-y²-y

Answer 1

1) ( 4x^2 - 9)(4x^2 +9)
2) ( x^2 - y^2) - ( x + y) = ( x - y)(x + y) - ( x + y) = ( x + y)(x - y - 1)