3х−43х-43х−4^2 - 5х−2 5х-25х−25х+25х+25х+2= 3x−43x-43x−43x−43x-43x−4-5x−25x-25x−25x+25x+25x+2 = 9x2−12x−12x+169x2-12x-12x+169x2−12x−12x+16-5x−25x-25x−25x+25x+25x+2 = 19x2−12x−12x+169x2-12x-12x+169x2−12x−12x+16+−25x2−10x+10x+4-25x2-10x+10x+4−25x2−10x+10x+4 = 9x2-12x-12x+16+−25x2−10x+10x+4-25x2-10x+10x+4−25x2−10x+10x+4 = 9x2-12x-12x+16-25x2-10x+10x+4 = – 16x2 – 24x + 20
3х−43х-43х−4^2 - 5х−2 5х-25х−25х+25х+25х+2= 3x−43x-43x−43x−43x-43x−4-5x−25x-25x−25x+25x+25x+2 = 9x2−12x−12x+169x2-12x-12x+169x2−12x−12x+16-5x−25x-25x−25x+25x+25x+2 = 19x2−12x−12x+169x2-12x-12x+169x2−12x−12x+16+−25x2−10x+10x+4-25x2-10x+10x+4−25x2−10x+10x+4 = 9x2-12x-12x+16+−25x2−10x+10x+4-25x2-10x+10x+4−25x2−10x+10x+4 = 9x2-12x-12x+16-25x2-10x+10x+4 = – 16x2 – 24x + 20