Solve 8x^2+4x-15 by completing method
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Solve by Completing the Square x^2-4x-15=0
x2−4x−15=0x2-4x-15=0
Add 1515 to both sides of the equation.
x2−4x=15x2-4x=15
To create a trinomial square on the left side of the equation, find a value that is equal to thesquare of half of bb.
(b2)2=(−2)2(b2)2=(-2)2
Add the term to each side of the equation.
x2−4x+(−2)2=15+(−2)2x2-4x+(-2)2=15+(-2)2
Simplify the equation.
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