How to solve a quadratic equation?
There are several ways to solve a quadratic equation. 1.Quadratic formula ax2 + bx + c = 0, where a can't equal 0 but b and c can.x = (-b± (b2 - 4ac)) / 2a2. completing the square(x + b/2)2 + c3. factorising by eye
The solution (x) gives the turning point of the curve where the gradient is equal to 0.
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Related Maths GCSE answers
All answers ▸Solve (x+2)/3x + (x-2)/2x = 3
A plane travels at the speed of 213 miles per hour. Work out an estimate for the number of seconds it takes a plane to travel 1 mile.
Insert one pair of brackets so that this calculation is correct; 3 x 6 + 5 - 1 = 32
5x+3 = 18. What is the value of x?