Question

(3×-4)²+(2×-1)(1+2×)-13(×+1)²

Answer 1

(9x-16)+(2x-1)(2x+1)-13(x la a 2 + 2ori x ori 1+1la a 2)                                          (9x-16)+(2x la a 2-1 la a2)-(x la a 2+2x+1)
(9x-16)+(4x-1)-(x la a 2+2x+1)
9x-16+4x-1-x la a 2-2x-1
x(9+4-2)+x la a 2+(-16-1-1)
11x+x la a 2+(-18)
11x+x la a 2-18