Question

solve it in expandation form


y^2 + y - 72​

Answer 1

Answer:

y^2+y-2 =0

y^2+9y-8y-72=0

y (y+9) -8(y+9)=0

(y-8)(y+9)=0

y = 8 or y= -9

Answer 2

Answer:

Step-by-step explanation:

y^2 + y- 72

y^2 + 9y - 8y - 72

y( y + 9) - 8(y+9)

(y-8) (y+9)

y -8=0

Y=8 ---(¡)

(y+9) = 0

y= -9