Eric Nicholas K's answer to .'s Secondary 3 E Maths Singapore question.
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Step 1: Check that the coefficient of x2 is 1. If not, factorise the expression until the coefficient of x2 is 1. In this case, the coefficient is 1.
Step 2. Introduce a term equal to the square of half the coefficient of x. Return the same term later.
Step 3. Factorise the first three terms into a completed square form.
Step 2. Introduce a term equal to the square of half the coefficient of x. Return the same term later.
Step 3. Factorise the first three terms into a completed square form.
Date Posted:
5 years ago
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