1) Factorise by splitting the middle term
i) 6x² +11x +4
ii) 5x^2 - 7x - 6
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Answer:
(i)
= 6x² + 11x +4
= 6x² + (8+3)x + 4
= 6x² + 8x + 3x +4
= 2x(3x+4) + 1(3x+4)
= (2x + 1) (3x + 4)
(II)
= 5x² - 7x -6
= 5x² - (10-3)x - 6
= 5x² - 10x +3x -6
= 5x(x-2) +3(x-2)
= (5x+3) (x-2)
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