Question
Solve the quadratic equation
Solve using the quadratic formula
Solve by completing the square
Solve using the PQ formula
x1=113−43426,x2=113+43426
Alternative Form
x1≈−18.671733,x2≈19.217187
Evaluate
x×11x=6x+3947
Multiply
More Steps

Evaluate
x×11x
Multiply the terms
x2×11
Use the commutative property to reorder the terms
11x2
11x2=6x+3947
Move the expression to the left side
11x2−6x−3947=0
Substitute a=11,b=−6 and c=−3947 into the quadratic formula x=2a−b±b2−4ac
x=2×116±(−6)2−4×11(−3947)
Simplify the expression
x=226±(−6)2−4×11(−3947)
Simplify the expression
More Steps

Evaluate
(−6)2−4×11(−3947)
Multiply
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Multiply the terms
4×11(−3947)
Rewrite the expression
−4×11×3947
Multiply the terms
−173668
(−6)2−(−173668)
Rewrite the expression
62−(−173668)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
62+173668
Evaluate the power
36+173668
Add the numbers
173704
x=226±173704
Simplify the radical expression
More Steps

Evaluate
173704
Write the expression as a product where the root of one of the factors can be evaluated
4×43426
Write the number in exponential form with the base of 2
22×43426
The root of a product is equal to the product of the roots of each factor
22×43426
Reduce the index of the radical and exponent with 2
243426
x=226±243426
Separate the equation into 2 possible cases
x=226+243426x=226−243426
Simplify the expression
More Steps

Evaluate
x=226+243426
Divide the terms
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Evaluate
226+243426
Rewrite the expression
222(3+43426)
Cancel out the common factor 2
113+43426
x=113+43426
x=113+43426x=226−243426
Simplify the expression
More Steps

Evaluate
x=226−243426
Divide the terms
More Steps

Evaluate
226−243426
Rewrite the expression
222(3−43426)
Cancel out the common factor 2
113−43426
x=113−43426
x=113+43426x=113−43426
Solution
x1=113−43426,x2=113+43426
Alternative Form
x1≈−18.671733,x2≈19.217187
Show Solution