यादिaतथा,b x^{2} + 2x + 1 के शुन्यक है तो1/a+1/B​

Question

यादिaतथा,b
x^{2}  + 2x + 1
के शुन्यक है तो1/a+1/B​

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Eliza 1 month 2021-08-18T18:12:11+00:00 1 Answer 0 views 0

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    2021-08-18T18:13:48+00:00

    Answer:

    Let Speed of boat =X km/hr

    Speed of stream =Y km/hr

    Speed of downstream (X+Y)=72/8=9km/hr

    Speed of upstream (X-Y)=84/12=7km/hr

    X+Y=9

    X-Y=7

    Using elimination method

    X=8

    Y=1

    Answer speed of boat =8km/hr

    Speed of stream =1km/hr

    Step-by-step explanation:

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18:9+8+9*3-7:3-1*13 = ? ( )