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secondary 2 | Maths
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Questions g and h
Solving Quadratic Equations by Factorisation
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should be u = 11/8 or 9/4.
for (h), both answers incorrect.
should be w = 13 or 11/5
need not have expanded.
can bring all terms to one side and factorise as
a^2-b^2 = (a+b)(a-b).
can check each answer by substituting back into equation to verify that the answer satisfies the equation.