Question

8. Упростите выражение (3х+1)(4х-2)-6(2х-1)2+14.

Answer 1

$(3x+1)(4x-2)-6(2x-1)^2+14=12x^2-6x+4x-2-$$-6(4x^2-4x+1)+14=12x^2-6x+4x-24x^2+24x-6+14=$$=-12x^2+22x+8$

или 

$(3x+1)(4x-2)-6(2x-1)*2+14=12x^2-6x+4x-2-24x+$$+12+14=12x^2-26x+24$