Which shows the equation below written in the form ax2 + bx + c = 0?
x + 10 = 3(x - 1)^2
a. 3x2 - 5x + 13 = 0
b. 3x2 -7x+ 13 = 0
c. 3x2-77-7 = 0
d. 3x2 - 5x- 7 = 0

3x² - 7x - 7 = 0

Step-by-step explanation:

Given

x + 10 = 3(x - 1)² ← expand the factor

x + 10 = 3(x² - 2x + 1) ← distribute by 3

x + 10 = 3x² - 6x + 3 ( subtract x + 10 from both sides )

0 = 3x² - 7x - 7 or

3x² - 7x - 7 = 0

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13