I need help on a math problem involving radicals!!?

Question

√x - √x + h

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h√x √x + h <---- (x and h are both under the radical)

please help!! thanks

Answer 1

Multiply both numerator and denominator by (√x + √(x+h)). The numerator becomes (x - (x + h)), or -h, which cancels with the h in the denominator, leaving (-1) in the numerator.