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Factorise X^2-X-20

(X+4)(X-5)

Answered by Stephen W. • Maths tutor

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If the probability of picking a red ball out of bag A is 2/5 and the probability of picking a red ball out of bag B is 3/7, what is the chance that you will pick exactly 2 red balls if you pick 2 balls from A and 1 ball from B? The balls are not replaced.

Solve 3x^2 - 4x - 6 = 0.

How to factorise x^2 + 6x +5

Solve the quadratic equation x^2+5x+6=0

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