The function g is such that \( \mathrm{g}(x)=2-3 x^{4} \) where \( x \neq 0 \) The function h is such that \( \mathrm{h}(x)=\frac{3 x}{2-x} \) where \( x \neq 2 \) (b) (i) Find \( \mathrm{g}(-2) \) (ii) Express the composite function hg in the form \( \mathrm{hg}(x)=\ldots \) Give your answer in its simplest form.

Given that the quadratic equation \( p x^{2}-9 q x+9 p=0 \), where \( p \) and \( q \) are constants, has two equal roots. Find \( p: q \). [2 marks.

Simplify the expression: \( (x^{1/4}y^{1/2})^{8} \)

act: \( 3 I(I-4 m+5 n) \) from \( 4 I(10 n-3 m+2 l) \) act: \( 3 a(a+b+c)-2 b(a-b+c) \) from \( 4 c(-a+b+c) \)

\( f(x)=2 x-1 \) and \( g(x)=3 x^{2} \) Find both \( f \circ g \) and \( g \circ f \), stating domain and range of each.

3. ( 0,5 điểm) Tìm \( x \) biết: \( x^{2}(x-1)+4=4 x \)