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If (a- b ) , a and ( a+b) are the zeroes of polynomial 2x-6x+5x-7 write the value of a . |
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Answer» There is a mistake in ques. You havnt wrote powers.Answering as per write question. f(x) = 2x3\xa0- 6x2\xa0+ 5x - 7Let α, β and γ be the zeroes.Then, α = a - b, β = a and γ = a + bWe know that if α, β and γ are the zeroes of a cubic polynomial,α + β + γ = -b/a(a - b) + a + (a + b) = -(-6)/23a = 3a = 1So, the value of a = 1 |
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