Solve the equation "x^2 + 3x - 4 = 0".
Recognise that quadratic can be factorised:
(x+4)(x-1)=0
This gives the solutions x=-4 and x=1 by inspection.
ZK
Related Maths GCSE answers
All answers ▸May you please help me solve these algebra problem set ?
There are 14 boys in a class and 16 girls. The Mean height of the class is 1.6m, the mean of the girls is 1.5m what is the mean height of the boys?
Write 36 as a product of its prime factors giving the answer in index form.
Solve 6x^2+8x-8 = 0 using factorisation.