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>
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