What number must you add to complete the square? x^2+6x=15
2 answers:
To complete the square you must split the b term in half, then square that answer.
6 is the b term, half of 6 is 3, 3 squared is 9. You will add 9 to both sides of x^2 + 6x = 15
x^2 + 6x + 9 = 24
I believe it would be <span>3±2<span>6</span></span>
You might be interested in
Perimeter =a+b+c
13.9 + 10.4 + 8.5 =
32.8 in (perimeter)
(4c - 3d)(3c + d) =
= 12c² + 4cd - 9cd - 3d² =
= <u>12c² - 5cd - 3d²</u>
