Question
Solve the equation(The real numbers system)
Solve the quadratic equation in the real numbers system
x∈/R
Alternative Form
No real solution
Evaluate
(x−6)×2−x(x×8)=2
Remove the parentheses
(x−6)×2−x×x×8=2
Simplify
More Steps

Evaluate
(x−6)×2−x×x×8
Multiply the terms
2(x−6)−x×x×8
Multiply
More Steps

Multiply the terms
x×x×8
Multiply the terms
x2×8
Use the commutative property to reorder the terms
8x2
2(x−6)−8x2
2(x−6)−8x2=2
Expand the expression
More Steps

Evaluate
2(x−6)
Apply the distributive property
2x−2×6
Multiply the numbers
2x−12
2x−12−8x2=2
Move the expression to the left side
2x−14−8x2=0
Rewrite in standard form
−8x2+2x−14=0
Multiply both sides
8x2−2x+14=0
Substitute a=8,b=−2 and c=14 into the quadratic formula x=2a−b±b2−4ac
x=2×82±(−2)2−4×8×14
Simplify the expression
x=162±(−2)2−4×8×14
Simplify the expression
More Steps

Evaluate
(−2)2−4×8×14
Multiply the terms
More Steps

Multiply the terms
4×8×14
Multiply the terms
32×14
Multiply the numbers
448
(−2)2−448
Rewrite the expression
22−448
Evaluate the power
4−448
Subtract the numbers
−444
x=162±−444
Solution
x∈/R
Alternative Form
No real solution
Show Solution
Solve the equation(The complex numbers system)
Solve using the quadratic formula in the complex numbers system
Solve by completing the square in the complex numbers system
Solve using the PQ formula in the complex numbers system
x1=81−8111i,x2=81+8111i
Alternative Form
x1≈0.125−1.316957i,x2≈0.125+1.316957i
Evaluate
(x−6)×2−x(x×8)=2
Remove the parentheses
(x−6)×2−x×x×8=2
Simplify
More Steps

Evaluate
(x−6)×2−x×x×8
Multiply the terms
2(x−6)−x×x×8
Multiply
More Steps

Multiply the terms
x×x×8
Multiply the terms
x2×8
Use the commutative property to reorder the terms
8x2
2(x−6)−8x2
2(x−6)−8x2=2
Expand the expression
More Steps

Evaluate
2(x−6)
Apply the distributive property
2x−2×6
Multiply the numbers
2x−12
2x−12−8x2=2
Move the expression to the left side
2x−14−8x2=0
Rewrite in standard form
−8x2+2x−14=0
Multiply both sides
8x2−2x+14=0
Substitute a=8,b=−2 and c=14 into the quadratic formula x=2a−b±b2−4ac
x=2×82±(−2)2−4×8×14
Simplify the expression
x=162±(−2)2−4×8×14
Simplify the expression
More Steps

Evaluate
(−2)2−4×8×14
Multiply the terms
More Steps

Multiply the terms
4×8×14
Multiply the terms
32×14
Multiply the numbers
448
(−2)2−448
Rewrite the expression
22−448
Evaluate the power
4−448
Subtract the numbers
−444
x=162±−444
Simplify the radical expression
More Steps

Evaluate
−444
Evaluate the power
444×−1
Evaluate the power
444×i
Evaluate the power
More Steps

Evaluate
444
Write the expression as a product where the root of one of the factors can be evaluated
4×111
Write the number in exponential form with the base of 2
22×111
The root of a product is equal to the product of the roots of each factor
22×111
Reduce the index of the radical and exponent with 2
2111
2111×i
x=162±2111×i
Separate the equation into 2 possible cases
x=162+2111×ix=162−2111×i
Simplify the expression
More Steps

Evaluate
x=162+2111×i
Divide the terms
More Steps

Evaluate
162+2111×i
Rewrite the expression
162(1+111×i)
Cancel out the common factor 2
81+111×i
Simplify
81+8111i
x=81+8111i
x=81+8111ix=162−2111×i
Simplify the expression
More Steps

Evaluate
x=162−2111×i
Divide the terms
More Steps

Evaluate
162−2111×i
Rewrite the expression
162(1−111×i)
Cancel out the common factor 2
81−111×i
Simplify
81−8111i
x=81−8111i
x=81+8111ix=81−8111i
Solution
x1=81−8111i,x2=81+8111i
Alternative Form
x1≈0.125−1.316957i,x2≈0.125+1.316957i
Show Solution