Question

2x²-16=x²+5x+8

Answer 1

x^2-5x-24=0

(x-8)(x+3)=0

x=8或x=-3

(3x-1)²+3(3x-1)+2=0

(3x-1+1)(3x-1+2)=0

3x(3x+1)=0

x=0或x=-1/3

2x²+3x-1=0 x=(-3±√17）/4

7x(2-x)=3(x-2) 7x^2-11x-6=0 (7x+3)(x-2)=0 x=-3/7或x=2

9x²-6x-2=0 x=(6±6√3)/18=(1±√3)/3