Question 19 of 107 in Unit 7

Algebra 7

1 mark · Easy

Solve the quadratic equation .

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0 or 4

Also accept: 4 or 0

Common mistakes: Giving only one root

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Marking points

B1 · 1 mark · For both correct solutions (0 and 4), in any order.

Worked solution

Rewrite the equation:

Factorise:

So, or .

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