Solve -8x^(2) 2x-7x^(2) 9x

Question

Simplify the expression

- 79 x^{3}

Evaluate

- 8 x^{2} \times 2 x - 7 x^{2} \times 9 x

Multiply

More Steps

Multiply the terms

- 8 x^{2} \times 2 x

Multiply the terms

- 16 x^{2} \times x

Multiply the terms with the same base by adding their exponents

- 16 x^{2 + 1}

Add the numbers

- 16 x^{3}

- 16 x^{3} - 7 x^{2} \times 9 x

Multiply

More Steps

Multiply the terms

7 x^{2} \times 9 x

Multiply the terms

63 x^{2} \times x

Multiply the terms with the same base by adding their exponents

63 x^{2 + 1}

Add the numbers

63 x^{3}

- 16 x^{3} - 63 x^{3}

Collect like terms by calculating the sum or difference of their coefficients

(- 16 - 63) x^{3}

Solution

- 79 x^{3}

Show Solution

x = 0

Evaluate

- 8 x^{2} \times 2 x - 7 x^{2} \times 9 x

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

- 8 x^{2} \times 2 x - 7 x^{2} \times 9 x = 0

Multiply

More Steps

Multiply the terms

- 8 x^{2} \times 2 x

Multiply the terms

- 16 x^{2} \times x

Multiply the terms with the same base by adding their exponents

- 16 x^{2 + 1}

Add the numbers

- 16 x^{3}

- 16 x^{3} - 7 x^{2} \times 9 x = 0

Multiply

More Steps

Multiply the terms

7 x^{2} \times 9 x

Multiply the terms

63 x^{2} \times x

Multiply the terms with the same base by adding their exponents

63 x^{2 + 1}

Add the numbers

63 x^{3}

- 16 x^{3} - 63 x^{3} = 0

Subtract the terms

More Steps

Simplify

- 16 x^{3} - 63 x^{3}

Collect like terms by calculating the sum or difference of their coefficients

(- 16 - 63) x^{3}

Subtract the numbers

- 79 x^{3}

- 79 x^{3} = 0

Change the signs on both sides of the equation

79 x^{3} = 0

Rewrite the expression

x^{3} = 0

Solution

x = 0

Show Solution