4x^2-56x=0 solve for x

Answer: x = 14, or 0

Step-by-step explanation:Using the method of completing the square, this expression of 4x² - 56x = 0, first, we divide the expression by 4 to make us fulfill the laws.

4x²/4 - 56x/4 = 0/4

x² - 14x = 0

Step 2; add to both sides of the equation, the square of half of the coefficient of x which is 14

x² - 14x + 7² = 0 + 7²

x² - 7² = 49

(x - 7) ² = 49

Now, to find x, we take the square roots of both sides

√ (x - 7) ² = ±√49

x - 7 = ± 7

Therefore,

x = 7 ± 7

x = 7 + 7 or 7 - 7

x = 14 or 0

the value of x is 14

Step-by-step explanation:

4x^2-56x=0

4x^2 = 56x

divide through by 4x

x = 56x/4x

x = 14