Attempt: Quadratic Formula Worksheet

Q1 Question Points: 1

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Solve $15x^2-14x-8=0$ by factorisation.

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Q2 Question Points: 1

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Solve $x^2-8x+5=0$ by completing the square.

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Q3 Question Points: 1

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Use the quadratic formula to solve $3x^2+4x-2=0$ .

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Q4 Question Points: 1

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Solve $0.24x^2-1.1x+1=0$ by first clearing the decimals and then factorising.

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Q5 Question Points: 1

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Solve the equation $3x(x-2)=2x+7$ .

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Q6 Question Points: 1

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Solve $2x^2+12x+7=0$ by completing the square.

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Q7 Question Points: 1

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Solve $(3x-2)^2=4x+9$ , giving the exact solutions.

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Q8 Question Points: 1

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Solve $7x^2-5x-9=0$ . Give both solutions correct to three significant figures.

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Q9 Question Points: 1

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The diagram shows a rectangular garden. Using the dimensions and area marked on the diagram, which value of $x$ is geometrically valid?

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Q10 Question Points: 1

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The diagram shows a straight line and a parabola. What are the $x$ -coordinates of their points of intersection?

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