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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Factorise x^2 + 3x +2


The line l is a tangent to the circle x^2 + y^2 = 40 at the point A. A is the point (2,6). The line l crosses the x-axis at the point P. Work out the area of the triangle OAP.


How do you factorise?


Solve the following ((3x + 1)/2x ) = 4


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