Gerry Lim's answer to :)'s Secondary 4 A Maths Singapore question.
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Remember the properties of discriminant when D>0, D=0, and D<0. If they ask you 1 or more roots, then instead of > should be >= sign
Date Posted:
2 years ago
Why not 64-16k+16>0?
Oh sry that's my mistake. Should be 64-16k-16 instead of 8
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