Solve: x/x+4 + 7/x-2 = 1 (Must show working)[4 marks]
(x(x-2) + 7(x+4) )/ (x+4)(x-2) = 1x(x-2) + 7(x+4) = (x+4)(x-2)x^2 -2x +7x +28 = x^2 -2x +4x -8x^2 +5x +28 = x^2 +2x -83x +36 = 03x = -36x x= -12
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How to solve the inequality 4(x+3) < 60?
Make s the subject of: v^2= u^2+2as
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