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Fins the calue if 'k' which of the following system of linesr equation have infinite number of solutions2x + ky=3 (k+x) X+ 25y = 2k+5 |
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Answer» 2. k. 3 -----=------=------- (k+x) 25. 2k+5 50=k^2+kx*--(i) , 2k^2+5k=75---(II) from eq. (ii), 2k^2+5k-75=0 2k^2+30k-5k-75=0 2k(k+15)-5(k+15)=0 2k-5=0. k+15=0 k=5/2. k=-15 |
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