Placed the following quadratic in vertex form by completing the square and then state the coordinates of its vertex? Y=x^2+18x-12

y = (x + 9)² -93

vertex: (-9, -93)

Step-by-step explanation:

x² + 18x = 12

x² + 18x + 81 = 12 + 81

(x+9)² = 93

y = (x + 9)² -93

vertex: (-9, -93)

7.25

step-by-step explanation:

we know that 7 equals to 7.0. we also know that 1/4=0.25. so we can add the two together and we get 7.25