Factorise: (i) 2 x2 – 7x – 15 (ii) x2 – 3x2 - x + 3
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Answer:
i. 12 b. 6 ok brother mark as brainliest
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Step-by-step explanation:
2x² – 7x – 15
2x² - 10x + 3x - 15
2x(x - 5) + 3(x - 5)
(x - 5) (2x + 5)
x² – 3x² - x + 3
-2x² - x + 3
-2x² - 3x + 2x + 3
-x(2x + 3) + (2x + 3)
(2x + 3) (1 - x)
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