InterviewSolution
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InterviewSolution
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If 5 is the zero of x3+kx3+2x+8 find k |
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Answer» Why -5 if 5 is zero so why we should put -5 stupid Let p(x)= x^3+kx^3+2x+8Now, p(5)=5^3+k*5^3+2*5+8 =125+125k+18 =143+125kHere, 5 is the zero of the given polynomial.So, p(5)=0 Or, 143+125k=0Or, 125k= -143Or, k= -143/125.Hence, the value of k is -143/125. Put the value of -5 in the equation |
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