SOLUTION: Solve by completing the square:
y^2+5y-2=0
Solve by using the Quadratic Formula
2x^2-4x-9=0
Algebra.Com
Question 1022804: Solve by completing the square:
y^2+5y-2=0
Solve by using the Quadratic Formula
2x^2-4x-9=0
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Solve by completing the square:
y^2 + 5y - 2 = 0
y^2 + 5y + __ = 2
Find the value that completes the square; (5/2)^2 = 6.25
y^2 + 5y + 6.25 = 2 + 6.25
y^2 + 5y + 6.25 = 8.25
factors to
(y + 2.5)(y + 2.5) = 8.25
y + 2.5) = +/-
y = -2.5 +
and
y = -2.5 -
:
Solve by using the Quadratic Formula
2x^2 - 4x - 9 = 0
a=2; b=-4; c=-9
x = 3.345
and
x = -1.345
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