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| 1. |
Find the value of k where -2 is the Zero of polynomial 3x square + 4 x + 2 k |
| Answer» Let f(x)=3x2 + 4x +2kIf -2\xa0is zero of f(x) then f(-2)=0 then f(-2)=0{tex}\\Rightarrow{/tex}\xa03 × (-2)² + 4 × -2 + 2k = 0{tex}\\Rightarrow{/tex}\xa012 - 8 + 2k = 0{tex}\\Rightarrow{/tex}\xa04 + 2k = 0{tex}\\Rightarrow{/tex}\xa02k = -4{tex}\\Rightarrow{/tex}\xa0k =\xa0{tex}\\frac{{ - 4}}{2}{/tex}{tex}\\Rightarrow{/tex}\xa0k = -2 | |