Factorise fully $$$15 y^{4}+20 u y^{3}$$$ (2) (b) Solve $$$4-3 x=\frac{5-8 x}{4}$$$ Show clear algebraic working. $$\[ x= \]$$ (3)

Mathematics

IGCSE&ALevel

EDEXCEL

Exam No：4MA1_1F_que_20210304 Year：2021 Question No：21

Answer:

1: Numbers and the number system

2: Equations, formulae and identities

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