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SOVA2 [1]
3 years ago
7

What number needs to be added to both sides of the equation to complete the square? x^2-9x=8

Mathematics
1 answer:
GrogVix [38]3 years ago
7 0

\frac{81}{4}

since the coefficient of the x² term is 1 then add

(\frac{1}{2} the coefficient of the x-term )² to both sides

x² + 2(- \frac{9}{2} )x + \frac{81}{4} = 8 + \frac{81}{4}


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