Solve: x^2 + 2x - 3 = 0
(x2+2x - 3) = 0 We need to find 2 numbers that multiply to make -3 and add to make 2. Once we have found them we can use them to find the solutions to the quadratic. Answer = (x+3)(x-1) = 0 therefore x = -3 and x = 1
JB
Related Maths GCSE answers
All answers ▸Solve the simultaneous equations 5x + y = 21 and x - 3y = 9
Solve 5x – 2 > 3x + 11.
How do I use trigonometric ratios to work out lengths in right-angled triangles?
One of the teachers at a school is chosen at random. The probability that this teacher is female is 3/5. There are 36 male teachers at the school. Work out the total number of teachers at the school.