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S_A_V [24]
3 years ago
10

What number needs added to the equation x^2+22x=9 to complete the square

Mathematics
2 answers:
shutvik [7]3 years ago
6 0
X^2 + 22x + 121 = 0  is a perfect  square
So we need to add 130 to the left side,
loris [4]3 years ago
4 0
121

x^2 + 22 x = 9

following the equation ( \frac{b}{2} ) ^{2}

you should divide 22 by 2, and then square it, which results in 121

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