Pre-Test
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Which statement best describes how to determine whether f(x) = x4- x is an even function?
Determine whether (-x)-(x) is equivalent to x1 - x
Determine whether (-4)-(x3) is equivalent to x4 + x3.
Determine whether (-x)4 - (-x) is equivalent to -(x4 - x%).
O Determine whether (-4)-(-x3) is equivalent to -(x4 + x®).

x is variable or an unknown value to find

example:

2x = 5 which means x = 3

step-by-step explanation:

given expression is .

now we need to simplify the given expression .

we know that square root is equivalent to the power 1/2. so that means we can take half of the exponents to get the square root of given expression.

expanding that will give a very very large number so let's keep answer in exponent form.