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 ▸A man stands 9 metres from the base of a tree. He knows the distance from where he is standing and the top of the tree is 15 metres. How tall is the tree?
-3<n<1 n is an integer, write down all the possible values of n.
Solve the two equations: Equation 1: 2a - 5b = 11 Equation 2: 3a + 2b = 7
Solve the Simultaneous equations. 3x+5y=22 4x-5y=6