Algebra
Calculus
Trigonometry
Matrix
Question
Factor the expression
(x−2)(x2+2x+4)
Evaluate
x3−8
Calculate
x3+2x2+4x−2x2−4x−8
Rewrite the expression
x×x2+x×2x+x×4−2x2−2×2x−2×4
Factor out x from the expression
x(x2+2x+4)−2x2−2×2x−2×4
Factor out −2 from the expression
x(x2+2x+4)−2(x2+2x+4)
Solution
(x−2)(x2+2x+4)
Show Solution
Find the roots
x=2
Evaluate
(x3−8)
To find the roots of the expression,set the expression equal to 0
x3−8=0
Move the constant to the right-hand side and change its sign
x3=0+8
Removing 0 doesn't change the value,so remove it from the expression
x3=8
Take the 3-th root on both sides of the equation
3x3=38
Calculate
x=38
Solution
More Steps
Evaluate
38
Write the number in exponential form with the base of 2
323
Reduce the index of the radical and exponent with 3
2
x=2
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