The power of a product is equal to the product of it's factors raised to the same power
Combine $\frac{1}{\sqrt{7}\sqrt{x+h}}+\frac{-1}{\sqrt{7}\sqrt{x}}$ in a single fraction
Combine $-1+\frac{\sqrt{x}}{\sqrt{x+h}}$ in a single fraction
Divide fractions $\frac{\frac{\frac{\sqrt{x}-\sqrt{x+h}}{\sqrt{x+h}}}{\sqrt{7}\sqrt{x}}}{h}$ with Keep, Change, Flip: $\frac{a}{b}\div c=\frac{a}{b}\div\frac{c}{1}=\frac{a}{b}\times\frac{1}{c}=\frac{a}{b\cdot c}$
Divide fractions $\frac{\frac{\sqrt{x}-\sqrt{x+h}}{\sqrt{x+h}}}{\sqrt{7}\sqrt{x}h}$ with Keep, Change, Flip: $\frac{a}{b}\div c=\frac{a}{b}\div\frac{c}{1}=\frac{a}{b}\times\frac{1}{c}=\frac{a}{b\cdot c}$
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