1.

जर x=-1 हे 5x²+kx-7=0 या समीकरणाचे एक मूळ असेल तर k ची किंमत काढा. ​

Answer»

ANSWER:

K= -12

Step-by-step EXPLANATION:

5x {}^{2}  + kx + 7 = 0 \\ 5(1) {}^{2}  + k(1) + 7 = 0 \\ 5 + k + 7 = 0 \\ k + 12 = 0 \\ k =  - 12



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