Question
Factor the expression
(x−2)(x2+2x+4)(x+2)(x2−2x+4)
Evaluate
x6−64
Rewrite the expression in exponential form
(x3)2−(6421)2
Use a2−b2=(a−b)(a+b) to factor the expression
(x3−6421)(x3+6421)
Evaluate
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Evaluate
x3−6421
Calculate
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Evaluate
−6421
Rewrite in exponential form
−(26)21
Multiply the exponents
−26×21
Multiply the exponents
−23
Evaluate the power
−8
x3−8
(x3−8)(x3+6421)
Evaluate
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Evaluate
x3+6421
Calculate
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Evaluate
6421
Rewrite in exponential form
(26)21
Multiply the exponents
26×21
Multiply the exponents
23
Evaluate the power
8
x3+8
(x3−8)(x3+8)
Evaluate
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Evaluate
x3−8
Rewrite the expression in exponential form
x3−23
Use a3−b3=(a−b)(a2+ab+b2) to factor the expression
(x−2)(x2+x×2+22)
Use the commutative property to reorder the terms
(x−2)(x2+2x+22)
Evaluate
(x−2)(x2+2x+4)
(x−2)(x2+2x+4)(x3+8)
Solution
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Evaluate
x3+8
Rewrite the expression in exponential form
x3+23
Use a3+b3=(a+b)(a2−ab+b2) to factor the expression
(x+2)(x2−x×2+22)
Use the commutative property to reorder the terms
(x+2)(x2−2x+22)
Evaluate
(x+2)(x2−2x+4)
(x−2)(x2+2x+4)(x+2)(x2−2x+4)
Show Solution

Find the roots
x1=−2,x2=2
Evaluate
x6−64
To find the roots of the expression,set the expression equal to 0
x6−64=0
Move the constant to the right-hand side and change its sign
x6=0+64
Removing 0 doesn't change the value,so remove it from the expression
x6=64
Take the root of both sides of the equation and remember to use both positive and negative roots
x=±664
Simplify the expression
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Evaluate
664
Write the number in exponential form with the base of 2
626
Reduce the index of the radical and exponent with 6
2
x=±2
Separate the equation into 2 possible cases
x=2x=−2
Solution
x1=−2,x2=2
Show Solution
