7 (2х-3) +4 (3х-2) [-2 (3 +5) +2 (4 +2x)]=14х-21+(12х-8)(-6-10+8+4х)=14х-21+(12х-8)(-8+4х)=14х-21-96х+48х2+64-32х=48х2-114х+43
7(2x-3)+4(3x-2)(-2(3+5)+2(4+2x))=14x-21+4*(3x-2)*(-2*(3+5)+2*(4+2x))=14x-21+(12x-8)*(-2*(3+5)+2*(4+2x))=14x-21+(12x-8)*(-16+2*(4+2x))=14x-21+(12x-8)*(-8+4x)=14x-21+(-128x+48x^2+64)=14x-21-128x+48x^2+64=-114x-21+48x^2+64=48x^2-114x+43
7 (2х-3) +4 (3х-2) [-2 (3 +5) +2 (4 +2x)]=14х-21+(12х-8)(-6-10+8+4х)=14х-21+(12х-8)(-8+4х)=14х-21-96х+48х2+64-32х=48х2-114х+43
7(2x-3)+4(3x-2)(-2(3+5)+2(4+2x))=14x-21+4*(3x-2)*(-2*(3+5)+2*(4+2x))=14x-21+(12x-8)*(-2*(3+5)+2*(4+2x))=14x-21+(12x-8)*(-16+2*(4+2x))=14x-21+(12x-8)*(-8+4x)=14x-21+(-128x+48x^2+64)=14x-21-128x+48x^2+64=-114x-21+48x^2+64=48x^2-114x+43