Solve {l}{x=-1text{de}}{f(x)=2x^7}

$$\left. \begin{array} { l } { x = - 1 \text { de } } \\ { f ( x ) = 2 x ^ { 7 } } \end{array} \right.$$

Solve for x, f

$$x=-1$$

$$f=2$$

Solution Steps

Consider the second equation. Insert the known values of variables into the equation.

$$f\left(-1\right)=2\left(-1\right)^{7}$$

Calculate -1 to the power of 7 and get -1.

$$f\left(-1\right)=2\left(-1\right)$$

Multiply 2 and -1 to get -2.

$$f\left(-1\right)=-2$$

Divide both sides by -1.

$$f=\frac{-2}{-1}$$

Fraction \frac{-2}{-1} can be simplified to 2 by removing the negative sign from both the numerator and the denominator.

$$f=2$$

The system is now solved.

$$x=-1 f=2$$