Which statement best describes how to determine whether f(x) = x3 + 5x + 1 is an even function?
determine whether –(x3 + 5x + 1) is equivalent to x3 + 5x + 1.
determine whether (–x)3 + 5(–x) + 1 is equivalent to x3 + 5x + 1.
determine whether –x3 + 5x + 1 is equivalent to –(x3 + 5x + 1).
determine whether (–x)3 + 5(–x) + 1 is equivalent to –(x3 + 5x + 1).

The answer is B) Determine whether (–x)^3 + 5(–x) + 1 is equivalent to x^3 + 5x + 1

answer:   x = 3 + √11     and     x = 3 - √11

step-by-step explanation:

x² - 6x + 9 = 11

(x - 3)² = 11

x - 3 = ±√11

    x = 3 ± √11

x = 3 + √11     and     x = 3 - √11

6mm^3 or .6cm^3

      216

      /   \

  36     6

  /   \     /

6     6   6

factor trees are nice.