Question

find ( f+g),(f-g) f are given ,f(x)=√x-1 and hare given ,g(x)=√x+1
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Answer 1

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Answer 2

2√x,2

..............f +g.......=√x+1+ (√x-1)=2√x

,..............f-g........=√x+1 -(√x-1)=2