3 years ago

What's the solution to these questions?

1 answer:

6 0

√(X-2 )+1=5
√(X-2 )=5-1
√(X-2 )=4 <=== square the tow sides

X-2 =16
x=16+2
x=18
..................................................................
(4x+1)^1/4-4=-1
(4x+1)^1/4=-1+4
(4x+1)^1/4=3
4x+1=(3)^4
4x+1=81
4x=81-1
4x=80
x=80/4
x=20

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