What number must you add to complete the square? x2 + 8x = 50

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asked Nov 9, 2018 24.6k views

1 vote

What number must you add to complete the square?

x2 + 8x = 50

Mathematics
high-school

Christopher A asked

by Christopher A

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1 Answer

4 votes

take 1/2 of the linear coefinet and squrae it
that would be 8
8/2=4, 4^2=16
add 16 to both sides to complete the square (it would end up like (x+4)^2=66)

Yoann Kergall answered Nov 15, 2018

by Yoann Kergall

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