Question

А)(x-4)(x+2)
б)(4a-b)(2a+3b)
в)(y-5)(y^2-2y+3)

Answer 1

а) x^2 +2x-4x-8=x^2-2x-8
б)8a^2+12ab-2ab-3b^2=8a^a+10ab-3b^2
с)y^3-2y^2+3y-5y^2+10y-15=y^3-7y^2+13y-15