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Question 1
3 marksSolve x2+4x+3>0x^2 + 4x + 3 > 0x2+4x+3>0
Boundary values are found by setting the quadratic expression equal to [ ].
Revision notes for OCR GCSE Maths Quadratic Inequalities. Open the guide for explanations and worked examples. Written against the OCR GCSE Maths (J560) specification, so the content matches what's examinable rather than general Maths background.
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Solve x2−6x+8≤0x^2-6x+8\le 0x2−6x+8≤0.