Question
Solve the quadratic equation
Solve using the quadratic formula
Solve by completing the square
Solve using the PQ formula
x1=1−3,x2=1+3
Alternative Form
x1≈−0.732051,x2≈2.732051
Evaluate
(x−1)2×8=24
Use the commutative property to reorder the terms
8(x−1)2=24
Expand the expression
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Evaluate
8(x−1)2
Expand the expression
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Evaluate
(x−1)2
Use (a−b)2=a2−2ab+b2 to expand the expression
x2−2x×1+12
Calculate
x2−2x+1
8(x2−2x+1)
Apply the distributive property
8x2−8×2x+8×1
Multiply the numbers
8x2−16x+8×1
Any expression multiplied by 1 remains the same
8x2−16x+8
8x2−16x+8=24
Move the expression to the left side
8x2−16x−16=0
Substitute a=8,b=−16 and c=−16 into the quadratic formula x=2a−b±b2−4ac
x=2×816±(−16)2−4×8(−16)
Simplify the expression
x=1616±(−16)2−4×8(−16)
Simplify the expression
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Evaluate
(−16)2−4×8(−16)
Multiply
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Multiply the terms
4×8(−16)
Rewrite the expression
−4×8×16
Multiply the terms
−512
(−16)2−(−512)
Rewrite the expression
162−(−512)
If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
162+512
Evaluate the power
256+512
Add the numbers
768
x=1616±768
Simplify the radical expression
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Evaluate
768
Write the expression as a product where the root of one of the factors can be evaluated
256×3
Write the number in exponential form with the base of 16
162×3
The root of a product is equal to the product of the roots of each factor
162×3
Reduce the index of the radical and exponent with 2
163
x=1616±163
Separate the equation into 2 possible cases
x=1616+163x=1616−163
Simplify the expression
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Evaluate
x=1616+163
Divide the terms
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Evaluate
1616+163
Rewrite the expression
1616(1+3)
Reduce the fraction
1+3
x=1+3
x=1+3x=1616−163
Simplify the expression
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Evaluate
x=1616−163
Divide the terms
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Evaluate
1616−163
Rewrite the expression
1616(1−3)
Reduce the fraction
1−3
x=1−3
x=1+3x=1−3
Solution
x1=1−3,x2=1+3
Alternative Form
x1≈−0.732051,x2≈2.732051
Show Solution
