f) \( \sqrt[4]{\left(\frac{1}{5}\right)^{-1}+2^{-4}}-\frac{4}{5}+3^{2} \cdot 20^{-1}= \)

Faktoriseer in Afrikaans \( 4(m-2 n)^{2}-25 \)

Multiply. \[ \begin{array}{l}(\sqrt{2}+7 \sqrt{5})(6 \sqrt{5}+\sqrt{2}) \\ \text { Simplify your answer as much as possible. }\end{array} \] II .

1.4 The straight line graph defined by \( y=2 x-4 \) will cut the \( y \)-axis at A. \( (0 ; 4) \) B. \( (-4 ; 2) \) C. \( (0 ;-4) \) D. \( (2 ;-4) \)

\( 3z^{3}<9x \)

Simplify each expression. Assume that the variables represent any real numbers. Use the absolute value button only when necessary. (a) \( \sqrt{y^{16}}=\square \) (b) \( \sqrt{x^{18}}=\square \)