Question

$3x(x - 1) - (x + 2x + 5 )$

Answer 1

3X(X-1)-(X+2x+5)
3X²-3 -X -2X -5=
3x²-x-2x-3-5=0
3x²-3x-8=0
√b-4ac
√(-3)²-4(.3.(-8)
√9+4.3.8
√100=10
x,= -3+-10/6
x,=- 3+10/6
x,=  +7/6

X,,=-3-10/6
x,,= -13/6