factorise using middle term split
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Answer:
- 2x²–15x+25
Here, sum = -15
product= 25×2=50
factors of 50=1,2,5,5
pair of no.s that satisfy this: –10,–5
So, 2x²–10x–5x+25
2x(x–5)–5(x–5)
(2x–5)(x–5)
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- 3x²–x–14
Sum=–1
Product=–14×3=–42
Factors of 42=1,2,7,3
Pair of no.s that satisfy this: –7, 6
So, 3x²+6x–7x–14
3x(x+2)–7(x+2)
(3x–7)(x+2)
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