Use the chain rule:
d/dx √(4 - x) = d/dx (4 - x)1/2
= 1/2 (4 - x)-1/2 x d/dx (4 - x)
= 1/2 (4 - x)-1/2 x -1
= -1/2 (4 - x)-1/2 or -1/2√(4 - x)
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4x to the sixth can be expanded to (4x * 4x * 4x)(4x * 4x * 4x) or (4x to the third)(4x to the third) the square root of the above would be 4x to the third
square root of 4x is 2 times square root of x, so answer is square root of x times 3 since it is 2 square roots of x plus one of them
Derivative with respect to 'x' of (5x)1/2 = (1/2) (5x)-1/2 (5) = 2.5/sqrt(5x)
x2 + 4x = 41
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