The first three steps for solving the quadratic equation by completing the square are shown. fill in the missing number in the last step. 9x2 +54x = 7 9(x2 + 6x) = 7 9(x2 + 6x + 9) = 7 + 88

will be the last step.

Explanation :

Given quadratic equation 9x^2+54x=7

⇒ ( By the associative property)

⇒ ( by adding 81 on both sides)

⇒ (taking 9 as common in left side of equation.)

⇒

⇒ ⇒

i’m here for points.

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)