Answer:
y = 1 or y = 27
Step-by-step explanation:
so first transpose -27 to the left side of the equation to make a quadratic equation.
y² - 28y + 27 = 0.....product = 27 , sum = -28 , factors = -1 , -27
( y² - y) ( -27y + 27)=0
y ( y - 1) - 27( y - 1)=0
( y - 1) ( y - 27)=0
y - 1 = 0 or y - 27 = 0
y = 1 or y = 27
