Question
Solve the quadratic equation
Solve using the quadratic formula
Solve by completing the square
Solve using the PQ formula
x1=−33+6,x2=3−3+6
Alternative Form
x1≈−1.816497,x2≈−0.183503
Evaluate
−6x=3x2+1
Swap the sides
3x2+1=−6x
Move the expression to the left side
3x2+1+6x=0
Rewrite in standard form
3x2+6x+1=0
Substitute a=3,b=6 and c=1 into the quadratic formula x=2a−b±b2−4ac
x=2×3−6±62−4×3
Simplify the expression
x=6−6±62−4×3
Simplify the expression
More Steps

Evaluate
62−4×3
Multiply the numbers
62−12
Evaluate the power
36−12
Subtract the numbers
24
x=6−6±24
Simplify the radical expression
More Steps

Evaluate
24
Write the expression as a product where the root of one of the factors can be evaluated
4×6
Write the number in exponential form with the base of 2
22×6
The root of a product is equal to the product of the roots of each factor
22×6
Reduce the index of the radical and exponent with 2
26
x=6−6±26
Separate the equation into 2 possible cases
x=6−6+26x=6−6−26
Simplify the expression
More Steps

Evaluate
x=6−6+26
Divide the terms
More Steps

Evaluate
6−6+26
Rewrite the expression
62(−3+6)
Cancel out the common factor 2
3−3+6
x=3−3+6
x=3−3+6x=6−6−26
Simplify the expression
More Steps

Evaluate
x=6−6−26
Divide the terms
More Steps

Evaluate
6−6−26
Rewrite the expression
62(−3−6)
Cancel out the common factor 2
3−3−6
Use b−a=−ba=−ba to rewrite the fraction
−33+6
x=−33+6
x=3−3+6x=−33+6
Solution
x1=−33+6,x2=3−3+6
Alternative Form
x1≈−1.816497,x2≈−0.183503
Show Solution
