complete the square to solve the equation below. check all that apply.
x^2 + 8x - 1 = 19
![complete the square to solve the equation below check all that apply x2 8x 1 19 class=](https://us-static.z-dn.net/files/dcd/3bcc9e55fd470db124da77c92ca08331.jpg)
Answer:
B and D
Step-by-step explanation:
First take the equation and subtract 19 on both sides. You get x^2+8x-20=0
using the quadratic formula you get x= (-8 + or - root (8^2 -4(1)(-20)))/ 2(1)
simplify it and you get x= (-8 +or- 12) / 2
Separate the equation into two and you get (-8 + 12) / 2 and (-8 - 12) / 2
first one gives: 4/2=2
second gives -20/2=-10
answer x=-10,2