Question

告诉我步骤,然后解答出来,谢谢y（y+1）=6，求y等于几？要计算的过程

Answer 1

y（y+1）=6

y^2+y=6

y^2+y-6=0

(y+3)(y-2)=0

y+3=0,y-2=0

y1=-3,y2=2