Solve x^2 - 7x + 10 = 0
First factorise: (x - 2)(x - 5) = 0
Then either: x - 2 = 0 so x = 2
or x - 5 = 0 so x = 5
AD
Related Maths GCSE answers
All answers ▸Solve the simultaneous equation: x+2y=8 and 2x+y=10 - using a calculator
Factorise and solve the quadratic equation x^2 + 6x + 8 = 0
A particle is moving along a straight line. The fixed point O lies on this line. The displacement of the particle from O at time t seconds is s metres where s = 2t3 – 12t2 + 7t(a) Find an expression for the velocity, v m/s, of the particle at time t.
Solve this simultaneous equation: 2 + 5y = 3x, x + y = 6