Find the value of k for which 3 is the zero of given f(x)=2x²+x-k
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Solution⤵️
Given,
f(x)=2x^2+x-k
So,
f(3)=>2×3^2+3-k=0
=>21-k=0
=>k=21
Given,
f(x)=2x^2+x-k
So,
f(3)=>2×3^2+3-k=0
=>21-k=0
=>k=21
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