IB Maths AA SL 2.7 Quadratic Equations and Inequalities Topic Practice

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Study SL 2.7—Quadratic equations and inequalities conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

Question 1

[Maximum number: 4]

Let f(x)=3x2−6x+pf(x)=3 x^{2}-6 x+p. The equation f(x)=0 has two equal roots.

Question (a)

(a)

Write down the value of the discriminant.

[ 1 ]

Question (b)

(b)

Hence, show that p=3.

[ 2 ]

Question (c)

(c)

Write down the solution of f(x)=0.

[ 1 ]
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