Solve frac{x^{2}-8x+15}{5x^2+10x}divx^2-9/10x^2*x^2+5x+6/2x-10

$$\frac { x ^ { 2 } - 8 x + 15 } { 5 x ^ { 2 } + 10 x } \div \frac { x ^ { 2 } - 9 } { 10 x ^ { 2 } } \times \frac { x ^ { 2 } + 5 x + 6 } { 2 x - 10 }$$

Evaluate

$$x$$

Short Solution Steps

Divide \frac{x^{2}-8x+15}{5x^{2}+10x} by \frac{x^{2}-9}{10x^{2}} by multiplying \frac{x^{2}-8x+15}{5x^{2}+10x} by the reciprocal of \frac{x^{2}-9}{10x^{2}}.

$$\frac{\left(x^{2}-8x+15\right)\times 10x^{2}}{\left(5x^{2}+10x\right)\left(x^{2}-9\right)}\times \frac{x^{2}+5x+6}{2x-10}$$

Factor the expressions that are not already factored in \frac{\left(x^{2}-8x+15\right)\times 10x^{2}}{\left(5x^{2}+10x\right)\left(x^{2}-9\right)}.

$$\frac{10\left(x-5\right)\left(x-3\right)x^{2}}{5x\left(x-3\right)\left(x+2\right)\left(x+3\right)}\times \frac{x^{2}+5x+6}{2x-10}$$

Cancel out 5x\left(x-3\right) in both numerator and denominator.

$$\frac{2x\left(x-5\right)}{\left(x+2\right)\left(x+3\right)}\times \frac{x^{2}+5x+6}{2x-10}$$

Multiply \frac{2x\left(x-5\right)}{\left(x+2\right)\left(x+3\right)} times \frac{x^{2}+5x+6}{2x-10} by multiplying numerator times numerator and denominator times denominator.

$$\frac{2x\left(x-5\right)\left(x^{2}+5x+6\right)}{\left(x+2\right)\left(x+3\right)\left(2x-10\right)}$$

Factor the expressions that are not already factored.

$$\frac{2x\left(x-5\right)\left(x+2\right)\left(x+3\right)}{2\left(x-5\right)\left(x+2\right)\left(x+3\right)}$$

Cancel out 2\left(x-5\right)\left(x+2\right)\left(x+3\right) in both numerator and denominator.

$$x$$

Differentiate w.r.t. x

$$1$$

Steps Using Definition of a Derivative

Divide \frac{x^{2}-8x+15}{5x^{2}+10x} by \frac{x^{2}-9}{10x^{2}} by multiplying \frac{x^{2}-8x+15}{5x^{2}+10x} by the reciprocal of \frac{x^{2}-9}{10x^{2}}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{\left(x^{2}-8x+15\right)\times 10x^{2}}{\left(5x^{2}+10x\right)\left(x^{2}-9\right)}\times \frac{x^{2}+5x+6}{2x-10})$$

Factor the expressions that are not already factored in \frac{\left(x^{2}-8x+15\right)\times 10x^{2}}{\left(5x^{2}+10x\right)\left(x^{2}-9\right)}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{10\left(x-5\right)\left(x-3\right)x^{2}}{5x\left(x-3\right)\left(x+2\right)\left(x+3\right)}\times \frac{x^{2}+5x+6}{2x-10})$$

Cancel out 5x\left(x-3\right) in both numerator and denominator.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{2x\left(x-5\right)}{\left(x+2\right)\left(x+3\right)}\times \frac{x^{2}+5x+6}{2x-10})$$

Multiply \frac{2x\left(x-5\right)}{\left(x+2\right)\left(x+3\right)} times \frac{x^{2}+5x+6}{2x-10} by multiplying numerator times numerator and denominator times denominator.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{2x\left(x-5\right)\left(x^{2}+5x+6\right)}{\left(x+2\right)\left(x+3\right)\left(2x-10\right)})$$

Factor the expressions that are not already factored in \frac{2x\left(x-5\right)\left(x^{2}+5x+6\right)}{\left(x+2\right)\left(x+3\right)\left(2x-10\right)}.

$$\frac{\mathrm{d}}{\mathrm{d}x}(\frac{2x\left(x-5\right)\left(x+2\right)\left(x+3\right)}{2\left(x-5\right)\left(x+2\right)\left(x+3\right)})$$

Cancel out 2\left(x-5\right)\left(x+2\right)\left(x+3\right) in both numerator and denominator.

$$\frac{\mathrm{d}}{\mathrm{d}x}(x)$$

The derivative of ax^{n} is nax^{n-1}.

$$x^{1-1}$$

Subtract 1 from 1.

$$x^{0}$$

For any term t except 0, t^{0}=1.

$$1$$