Question
Simplify the expression
5−2x3
Evaluate
2−2x3+3
Solution
5−2x3
Show Solution

Find the roots
x=2320
Alternative Form
x≈1.357209
Evaluate
2−2x3+3
To find the roots of the expression,set the expression equal to 0
2−2x3+3=0
Add the numbers
5−2x3=0
Move the constant to the right-hand side and change its sign
−2x3=0−5
Removing 0 doesn't change the value,so remove it from the expression
−2x3=−5
Change the signs on both sides of the equation
2x3=5
Divide both sides
22x3=25
Divide the numbers
x3=25
Take the 3-th root on both sides of the equation
3x3=325
Calculate
x=325
Solution
More Steps

Evaluate
325
To take a root of a fraction,take the root of the numerator and denominator separately
3235
Multiply by the Conjugate
32×32235×322
Simplify
32×32235×34
Multiply the numbers
More Steps

Evaluate
35×34
The product of roots with the same index is equal to the root of the product
35×4
Calculate the product
320
32×322320
Multiply the numbers
More Steps

Evaluate
32×322
The product of roots with the same index is equal to the root of the product
32×22
Calculate the product
323
Reduce the index of the radical and exponent with 3
2
2320
x=2320
Alternative Form
x≈1.357209
Show Solution
