factorise 4 x square +28x-240
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Answer:
448x -240
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4x²+28x-240
4x²-20x+48x-240
4x(x-5)+48(x-5)
(4x+48)(x-5)
4x²-20x+48x-240
4x(x-5)+48(x-5)
(4x+48)(x-5)
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