EM-2027

Quadratic functions

E Math · Secondary 4 · Hard · Quadratic functions

The graph of

y = x^3 - 5x + 2

is drawn.

A line

y = 4x - 3

cuts the curve at points whose

x

-coordinates are the solutions of

x^3 - Cx + D = 0

.

Find the values of

C

and

D

.

$C = 9, D = 5$
$C = 5, D = 9$
$C = -9, D = 5$
$C = 9, D = -5$

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