17) \( Y=4-x \)

Find the relative extreme points of the function, if they exist. Then sketch a graph of the function. \[ \mathrm{G}(\mathrm{x})=\frac{-16}{\mathrm{x}^{2}+2} \]

\( \sum _ { k = 1 } ^ { 1 } ( \frac { 7 } { 4 } j ^ { 4 } - \frac { 3 } { 8 } j ^ { 2 } + 81 \)

Factor the expression \[ x^{2}+5 x+6 \]

The lengths of the rectangle have been measured to the nearest tenth of a metre. Work out the following, writing down all the figures on your calculator display: a) The upper bound for the perimeter of the rectangle. b) The lower bound for the area of the rectangle. 15.8 m

Factorthe expression \[ x^{2}+3 x+2 \] \( (x+1)(x+2)(x+2) \) \( (x+1)(x+3) \)