Chapter 12, Problem 10GR

To determine

To find: the expression by expanding the expression.

Answer to Problem 10GR

The equation can be simplified to $-10+2\text{x}$ .

Explanation of Solution

Given:

  $-2\left(5-\text{x}\right)$ .

Concept used:

If number is outside of bracket number should be multiply with each Elements inside the bracket.

If the equation is equated to $0$ then the root of the equation can be derived.

Calculation:

  $-2\left(5-\text{x}\right)$ .

If number is outside of bracket then the number should be multiplied with each Elements inside the bracket.

  $-10+2\text{x}$ .

Equating the equation to zero to find the roots:

  $\begin{array}{l}-10+2\text{x=0}\text{.}\\ 2\text{x}=10.\\ \text{x}=5.\end{array}$

Hence, the equation can be simplified to $-10+2\text{x}$ .