How to solve x ^ 2 * 7x - 20

1. Factor the equation (x + 2)(x + 3) = 0. 2. Set each factor equal to zero: x + 2 = 0 and x + 3 = 0. 3. Solve for x: x = -2 and x = -3.

Solve x ^ 2 * 7x - 20 | Equatix

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Question

$$x^{2}7x-20$$

Differentiate w.r.t. x

$21x^{2}$

Steps Using Derivative Rule for Sum

To multiply powers of the same base, add their exponents. Add $2$ and $1$ to get $3$.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x^{3}\times 7-20)$$

The derivative of a polynomial is the sum of the derivatives of its terms. The derivative of a constant term is $0$. The derivative of $ax^{n}$ is $nax^{n-1}$.

$$3\times 7x^{3-1}$$

Multiply $3$ times $7$.

$$21x^{3-1}$$

Subtract $1$ from $3$.

$$21x^{2}$$

Show Solution

Evaluate

$7x^{3}-20$

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Example

Question

Differentiate w.r.t. x

Steps Using Derivative Rule for Sum

Evaluate

Solution Steps