How do you solve using the completing the square method #y^2 - 7y = -10#?
1 Answer
May 18, 2017
#y=5#
#y=2#
Explanation:
#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#
