Question

Solve the equation by completing the square. 0=4x^2-72x

Answer 1

x = 0

or

x = 18

Explanation:

−4x^2+72x=0

(−4)⋅x^2+(72)⋅x=0

x⋅[(−4)⋅x+(72)]=0

x=0

OR

(−4)⋅x^2+(72)=0

x=−(72)−4

x=−(4)⋅(18)/(4)⋅(−1)=18