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Factorise fully: 3x - 9x^2

3x(1-3x)

JV

Answered by Jake V. • Maths tutor

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How do I solve the quadratic equation x^2+4x+3=0

Find x when 2x-3=5

A and B are points on a circle, centre O. BC is a tangent to the circle. AOC is a straight line. Angle ABO = x°. Find the size of angle ACB, in terms of x. Give your answer in its simplest form. Give reasons for each stage of your working.

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