x² + 10x + 20 = 0
Please use the Completing Squares Method...If possible use both the types...
aryandhawale:
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x² + 10x + 20 = 0
Subtract 20 from both sides of the equation.
x² + 10x = −20
Add the (b/2)² = (5)² to each side of the equation.
x² + 10 + (5)² = −20 + (5)²
Simplify the equation
x² + 10x + 25 = 5
(x + 5)² = 5
x + 5 = ±√5
x = ±√5-5
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