If f(x) = x^2 - x + 7, find f(3)
f (3) = (3)2 - (3) + 7
= 9 - 3 + 7
= 13
SJ
Related Maths GCSE answers
All answers ▸f(x) = 5x − 12. (i) Calculate f(4). (ii) Find f( x + 1). Give your answer in the form ax + b .
Solve 7x + 5 < 3 + 2x
White paint costs £2.80 per litre. Blue Paint costs £3.50 per litre. White paint and blue paint are mixed in the ratio 3:2 Work out the cost of 18 litres of the mixture.
Expand and simplify (2x + 4)(3x - 5).