Finite Math Examples

$x^{2 + 4 x} x = 21$

Step 1

Subtract $21$ from both sides of the equation.

$x^{2 + 4 x} x - 21 = 0$

Step 2

Multiply $x^{2 + 4 x}$ by $x$ by adding the exponents.

Tap for more steps...

Step 2.1

Multiply $x^{2 + 4 x}$ by $x$ .

Tap for more steps...

Step 2.1.1

Raise $x$ to the power of $1$ .

$x^{2 + 4 x} x^{1} - 21 = 0$

Step 2.1.2

Use the power rule $a^{m} a^{n} = a^{m + n}$ to combine exponents.

$x^{2 + 4 x + 1} - 21 = 0$

Step 2.2

Add $2$ and $1$ .

$x^{4 x + 3} - 21 = 0$

Step 3

Graph each side of the equation. The solution is the x-value of the point of intersection.

$x \approx 1.42010921$

Step 4