Factorise x^2+12x+7
(x+4)(x+3)
From the question you need to write out all the multiples of the coefficient of x, in this case:
1 and 12, 2 and 6, 3 and 4. The numbers in the brackets have to also add up to the number at the end, in this case it will be 3 and 4.
VA
Related Maths GCSE answers
All answers ▸OPG is a triangle. N is point on OG such that ON : NG = 2 : 3. OP = a, PG = b. Express ON in terms of A and B.
There is a spinner game at a fair. The spinner is numbered with all even numbers from 2 to 12. Each section is equal in size. Dan has numbers 4 and 10. What is the probability that he wins a prize? Give your answer as a fraction in its simplest form.
Show that (x+1)(x+2)(x+3) can be written as ax^3+bx^2+cx+d
Solve the quadratic equation x^2 + 3x + 2 = 0, by factorisation.