When f(x)=x 2 +3x-2,then value of 2f(a)-1 is? 1)2a 2 + 6a-5 2)2a 2 +6a+5 3)2a 2 -6a+5 4)2a 2 -6a-5
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f(x)=x²+3x-2
∴, f(a)=a²+3a-2
∴, 2f(a)-1=2a²+6a-4-1=2a²+6a-5
Answer is (1)
∴, f(a)=a²+3a-2
∴, 2f(a)-1=2a²+6a-4-1=2a²+6a-5
Answer is (1)
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