Relative maximum: y is almost equals to 2 point 0 0 4

Relative maximum: $y\approx 2.004$

when x is almost equal to negative negative 0 point 0 8 2

when $x\approx -0.082$

Relative minimum: y is almost equal to negative 1 point 6 0 4

Relative minimum: $y\approx -1.604$

when x is almost equal to 4 point 0 8 2

when $x\approx 4.082$

Increases on the interval: open parenthesis negative infinity comma negative 0 point 0 8 2 close parenthesis

Increases on the interval: $(-\infty , -0.082)$

Increases on the intervalss: open parenthesis negative infinity comma negative 0 point 0 8 2 close parenthesis and open parenthesis 4 point 0 8 2 comma infinity close parenthesis

Increases on the intervals: $(-\infty , -0.082)$ and $(4.082, \infty )$

Decreases on the interval: open parenthesis negative 0 point 0 8 2 comma 4 point 0 8 2 close parenthesis

Decreases on the interval: $(-0.082,4.082)$