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Expressions and Equations
Year 11 Mini-Assessment 15 FOUNDATION Expressions and Equations
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allow 1 arithmetic mistake
9a – b x(18 – 24x) or 6(3x – 4x2) 6x(3 – 4x) allow 1 arithmetic mistake 4x x – 18 7x – 8
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4x = 32 x = 8 – 3 = 3x – 16 13 = 3x 13/3 = x
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allow 1 arithmetic mistake fully correct numbers correct,
(3x – 4)(3x – 4) = 9x2 – 12x – 12x + 16 = 9x2 – 24x + 16 allow 1 arithmetic mistake fully correct numbers correct, 1 or both signs wrong fully correct (x – 8)(x – 4) follow through from part (b) provided answer was a double bracket x = 8 and x = 4
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