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 the following simultaneous equations: 2x - 3y = 16, x + 2y = -6
The probability of obtaining heads on a biased coin is 0.4. The coin is tossed 600 times. Write down the mean number of heads and the standard deviation of the number of heads.
Expand and simplify (x-4)(2x+3y)^2
You are told that the y is proportional to x^2 and that when y=75, x=5. Find a formula for x in terms of y.