•
x2+3x-4<0
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(x+4)(x-1)<0
•
y=(x+4)(x-1)
•
0=(x+4)(x-1)
•
x=-4 l x=1
•
since y<0
•
-4<x<1
•
x2+3x-4<0
•
(x+4)(x-1)<0
•
y=(x+4)(x-1)
•
0=(x+4)(x-1)
•
x=-4 l x=1
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Last reply 4 days ago
Did Cambridge maths students find maths and further maths a level very easy?Last reply 2 weeks ago
Edexcel A Level Mathematics Paper 2 unofficial mark scheme correct me if wrong71