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For the function given by f(x) = x² - 5x - 6, solve for f(x)=0 by factorising.

This is a very common question for GCSE maths students and the idea of a quadratic comes up very often in other forms too.To factorise this equation we need to find two numbers whose sum is -5 and whose prod...
TF
Answered by Taylor F. • Maths tutor
3502 Views

Expand (x+1)(x-4)

Using the "FOIL" Technique should help with the expansion, telling you what order to multiply things together. F stands for "firsts", so the first step is to multiply the first things in ...
EG
Answered by Emily G. • Maths tutor
5713 Views

There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.

Question: There are 10 boys and 20 girls in a class. The class has a test. The mean mark for all the class is 60. The mean mark for the girls is 54. Work out the mean mark for the boys.Answer: total mark for...
SK
Answered by Sajid K. • Maths tutor
4584 Views

Solve the simultaneous equations.

x= 9/2y= -3/2
SP
Answered by Shivam P. • Maths tutor
3230 Views

expand out the bracket (2m - 3)(m + 1).

claw technique: multiply each 'thing' in the first bracket with each 'thing' in the second bracket.2m 2 + 2m - 3m -3then collect the like terms2m 2 -1 -3
AP
Answered by Abigail P. • Maths tutor
4182 Views