Solve x^22x-8 - ScanMath

Question

Simplify the expression

Solution

2 x^{3} - 8

Evaluate

x^{2} \times 2 x - 8

Solution

More Steps

Evaluate

x^{2} \times 2 x

Multiply the terms with the same base by adding their exponents

x^{2 + 1} \times 2

Add the numbers

x^{3} \times 2

Use the commutative property to reorder the terms

2 x^{3}

2 x^{3} - 8

Show Solution

Factor the expression

Factor

2 (x^{3} - 4)

Evaluate

x^{2} \times 2 x - 8

Multiply

More Steps

Evaluate

x^{2} \times 2 x

Multiply the terms with the same base by adding their exponents

x^{2 + 1} \times 2

Add the numbers

x^{3} \times 2

Use the commutative property to reorder the terms

2 x^{3}

2 x^{3} - 8

Solution

2 (x^{3} - 4)

Show Solution

Find the roots

Find the roots of the algebra expression

x = 34

Alternative Form

x \approx 1.587401

Evaluate

x^{2} \times 2 x - 8

To find the roots of the expression,set the expression equal to 0

x^{2} \times 2 x - 8 = 0

Multiply

More Steps

Multiply the terms

x^{2} \times 2 x

Multiply the terms with the same base by adding their exponents

x^{2 + 1} \times 2

Add the numbers

x^{3} \times 2

Use the commutative property to reorder the terms

2 x^{3}

2 x^{3} - 8 = 0

Move the constant to the right-hand side and change its sign

2 x^{3} = 0 + 8

Removing 0 doesn't change the value,so remove it from the expression

2 x^{3} = 8

Divide both sides

\frac{2 x ^{3}}{2} = \frac{8}{2}

Divide the numbers

x^{3} = \frac{8}{2}

Divide the numbers

More Steps

Evaluate

\frac{8}{2}

Reduce the numbers

\frac{4}{1}

Calculate

4

x^{3} = 4

Take the 3 -th root on both sides of the equation

3 x^{3} = 34

Solution

x = 34

Alternative Form

x \approx 1.587401

Show Solution

X^22x 8

Simplify the expression

Solution

Factor the expression

Factor

Find the roots

Find the roots of the algebra expression