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GCSE Mathematics Intermediate Tier

Paper 2 (f)

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A solution to the equation

x3 – 7x – 75 = 0lies between 4 and 5.Use trial & improvement to find this solution correct to 1 decimal place.A solution to the equation

x3 + 2x – 5 = 0lies between 1 and 2.Use trial & improvement to find this solution correct to 1 decimal place.A solution to the equation

x3 - 12x – 25 = 0lies between 4.2 and 4.3Use trial & improvement to find this solution correct to 2 decimal place.

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