Erfana Beevee Binte Hassan Shariff's answer to Jxinlim's Secondary 2 Maths Singapore question.
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Notice that a^2 + 6a +9=(a+3)^2 and a^2+2ab+b^2=(a+b)^2. Using the rule, a^2-b^2=(a+b)(a-b), factories the numerator and denominator.
Date Posted:
1 month ago
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