How do you use the quadratic formula?
Every quadratic equation is in the form: ax2 + bx + c The quadratic formula is as follows: [ -b ± sqrt(b2 - 4ac) ] / 2a The quadratic formula finds you the roots of the quadratic equation.
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Related Maths GCSE answers
All answers ▸The point P has coordinates (3, 4) The point Q has coordinates (a, b) A line perpendicular to PQ is given by the equation 3x + 2y = 7 Find an expression for b in terms of a.
How do you make f the subject of the following a = c/d + e/f
GCSE Maths - Solve the equation (2x+3)/(x-4) - (2x-8)/(2x+1) = 1 Give your answer to 2 decimal places.
Factorise x^2 -7x+10, and hence solve x^2-7x+10=0