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secondary 3 | A Maths
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Need help to find my mistake. The correct ans is (+-8)
Date Posted: 11 months ago
Views: 127
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done
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clear
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Theres an issue with your (4) because there is still x on the RHS. when we do substitution we want to completely remove one variable in the eqn. But in your working, in the step before you make b^2-4ac=0 there is both x and y so you can’t use the coefficients as discriminant
Date Posted:
11 months ago
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