What is the solution to x^2 + 5x - 7 = 0
X can be found by using the quadratic equation. x = -b plus or minus (b2-4ac)1/2/2a. We find that x=-5/2 plus or minus (53)1/2/2.
SA
Related Maths GCSE answers
All answers ▸State the nth term of the following sequence: 3, 7, 11, 15, 19
Solve the following simultaneous equations: 3x+y=11, 2x+y=8
There are 30 yellow sweets and 10 black sweets in a bag. Two sweets are taken out at random without replacement. Work out the probability that the two sweets are the same colour.
Expand and simplify 3(2x + 5) – 2(x – 4)