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secondary 3 | A Maths
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how to do this qn
Date Posted: 6 years ago
Views: 258
Move all terms to the left. As both coefficients of x2 are positive, means the graphs are u-shaped. Use b2-4ac < 0 for both cases, since the inequality sign requires the graphs to be above the x-axis.
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Date Posted:
6 years ago
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