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Question
secondary 3 | A Maths
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pls help thanks
Date Posted: 9 months ago
Views: 114
-x²+4x-7
Δ=16-4×7=-12 <0
∴ -x²+4x-7<0 for all value of x
Δ=16-4×7=-12 <0
∴ -x²+4x-7<0 for all value of x
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done
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clear
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There
Date Posted:
9 months ago
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