Question

(4x - 3) 2x – (2x + 1)(3x - 2) – 2x, при x=0,7

Answer 1

(4x-3).2x - (2x+1)(3x-2)=4x.2x-3.2x-2x.3x+2x.2-1.3x+1.2=
=8x²-6x-6x²+4x-3x+2=2x²-5x+2

Answer 2

8x²-6x-6x²+4x-3x+2=2x²-5x+2
x=0,7  2*0,49-5*0,7+2=0,98-3,5+2=-0,52