Question

y square + 6 Y - 27 equal to zero

Answer 1

y square + 6y -27 = 0
y square +6y = 0+27
y square = 27 - 6y
y = 27 - 6y/y ( y is cut )
y = 27 - 6
y = 21

Answer 2

Step-by-step explanation:

y^2 +6y -27 =0

y^2 +6y =27

y^2 +6y+9 =27+9

y^2 +6y+9 =36

(y+3)^2 = 36

y+3 = ±6

y+3= 6. or y+3= -6

y=3 or y= -9