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If you mean: 4*square root of x2 then it is 4x
The square root of 16 is four. Four cubed is 4 x 4 x 4 = 64
Take out the largest perfect square you can find, in this case, 4: root(40) = root(4 x 10) = root(4) x root(10) = 2 x root(10).
3/(4*square root(x)) ....Mukesh
x2 + 4 = 0 then get the x on one side. x2 = -4 then find the square root of both which would cancel the square on the x. therefore the answer is: x = the square root of -4 = i squared root 4, which is a complex number ( imaginary number) since you cannot find the square root of oa negative number