$$\( \mathrm{f}(x)=4-3 x \quad \mathrm{~g}(x)=x^{2}+x \quad \mathrm{~h}(x)=3^{x}\)$$ Simplify. $$\(\operatorname{gf}(x)-9 g(x)\)$$ .............................................
Exam No：0580_w20_qp_43 Year：2020 Question No：10(c)(ii)
Answer:
\(20-36 x\)
or \(4(5-9 x)\) final answer
or \(4(5-9 x)\) final answer
Knowledge points:
E2.2.2 Use brackets and extract common factors.
E2.2.4.1 ax+bx+kay+kby
Solution:
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