sqrt(x) + 5 = 9
so
sqrt(x) = 9 - 5 = 4
so
x = 4^2 = 16
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Square root of 3=1 so 1+4=5
You can always add radicals, but you can't simplify unless the radicands have a common factor. For example, the square root of 20 plus the square root of 45 equals 2 times the square root of 5 plus 3 times the square root of 5, which is 5 times the square root of 5.
x=1/2(-1-square root of 21) and x=1/2(square root of 21 -1)
Using the quadratic equation formula the values of x are: x = -2 - the square root of 5 and also x = -2 + the square root of 5
Square root of 25= 5. 5 + 144 + 13 = 162.