C1 Completing the Square past paper questions

Document of Completing the Square past paper questions, C1, Edexcel

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Sacred Heart of Mary Girls' School COMPLETING THE SQUARE January 2010
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dy -1
4. = 5x 2 + x G x, x>0
dx
Given that y = 35 at x = 4, find y in terms of x, giving each term in its simplest form.
(7)
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Sacred Heart of Mary Girls' School COMPLETING THE SQUARE January 2010
Just question a)
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10. f(x) = x 2 + 4kx + (3 + 11k ), where k is a constant.
(a) Express f(x) in the form ( x + p ) 2 + q, where p and q are constants to be found in terms
of k.
(3)
Given that the equation f(x) = 0 has no real roots,
(b) find the set of possible values of k.…read more

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Sacred Heart of Mary Girls' School COMPLETING THE SQUARE January 2013
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4 x2 + 8x + 3 a ( x + b) + c
2
10.
(a) Find the values of the constants a, b and c.
(3)
(b) On the axes on page 27, sketch the curve with equation y = 4 x 2 + 8 x + 3 , showing
clearly the coordinates of any points where the curve crosses the coordinate axes.…read more

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