PRINT OUT FOR YOUR RECORDS
- Write in the from a(x+b)^2 + c
i.e. complete the square: 3x^2-7x-20[3 marks]
- Simplify \frac{3}{x^2-5x +4} - \frac{5}{x^2-16}
[4 marks]
- Simplify as far as possible: \frac{15}{\sqrt {5}} - \frac{46}{2\sqrt{7} - \sqrt{5}}
[4 marks]
- Solve 6x^2+x-12>0
[3 marks]
- Solve 5+x+x^2>0
[3 marks]
- Solve x^2 = 4+5xy \\ x=5y +1
[3 marks]
Challenge question: can you write 4x^2 - 20x-25 in the form (ax+b)^2 +c?
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