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    So I managed to do part a & b but unsure on how to go about answering part c. Any help would be appreciated!
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    make f(x)=g(x) as it says.
    Re-arrange and solve for x.

    x^2-6x+8=x+3
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    (Original post by Kangie)
    So I managed to do part a & b but unsure on how to go about answering part c. Any help would be appreciated!
    Write the f(x) expression on the left-hand-side, g(x) on the right-hand-side, then rearrange so that one side equals 0 then solve the quadratic using methods you've learnt.
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    Just for reference

    

b.

(x-4).(x-2)=0

x=4 and 2



c.

x^2 - 6x + 8 = x + 3



x^2-7x+5

(x-7/2)^2 -49/4+5=0

(x-3.5)^2 - 29/4 = 0

x - 7/2 = (+-) sqrt(29/4)

x= 7/2 (+-) sqrt(29/4)
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    (Original post by Kangie)
    So I managed to do part a & b but unsure on how to go about answering part c. Any help would be appreciated!

    (c) x^2 - 6x + 8 = x = 3
    x^2 - 7x + 5 = 0

    Quadratic formula or complete the square
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    (Original post by naxiv)
    Just for reference

    

b.

(x-4).(x-2)=0

x=4 and 2



c.

x^2 - 6x + 8 = x + 3



x^2-7x+5

(x-7/2)^2 -49/4+5=0

(x-3.5)^2 - 29/4 = 0

x - 7/2 = (+-) sqrt(29/4)

x= 7/2 (+-) sqrt(29/4)
    You are not supposed to give the OP the direct answer, instead help them to the answer.
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    (Original post by notnek)
    Write the f(x) expression on the left-hand-side, g(x) on the right-hand-side, then rearrange so that one side equals 0 then solve the quadratic using methods you've learnt.
    Oh I completely forgot about the quadratic formula as I hadn't used it in so long! Now it makes sense, thanks
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    (Original post by Kangie)
    Oh I completely forgot about the quadratic formula as I hadn't used it in so long! Now it makes sense, thanks
    That's a good way do doing it but it would be longer. Well it would be alright, it'd be easier to do completing the square though. However, you can cross-check your answer by using both and checking if you got the same answers.


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