F2 MM C3

Question

Answer 1

J)

x=1-y

     1+2y

x(1+2y)=1-y

x+2xy-1=-y

x-1=-y-2xy

x-1=y(-1-2x)

y=x-1

    -1-2x

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K)

p=5t+pq

p-pq=5t

p(1-q)=5t

p=5t

    1-q

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L)

2w=√2u+v

(2w)²=2u+v

4w²-v=2u

u=4w²-v    

         2

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