How do you solve using the completing the square method $y^2 - 7y = -10$ ?

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Answer 1 · 2017-05-18T04:41:03

$y=5$
$y=2$

$y^2-7y=-10$

$y^2-7y+49/4=-10+49/4=(-40+49)/4=9/4$
$(y-7/2)^2=9/4$
$y-7/2=+-sqrt(9/4)=3/2$
$y=3/2+7/2=10/2=5$
$y=-3/2+7/2=4/2=2$

$y=5$
$y=2$

How do you solve using the completing the square method y^2 - 7y = -10y^2 - 7y = -10?