Convert the following equation into simultaneous equation and solve Under root x/y=4,1/x+1/y=1/xy

Question

Convert the following equation into simultaneous equation and solve
Under root x/y=4,1/x+1/y=1/xy

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Hailey 2 weeks 2021-09-14T22:44:58+00:00 1 Answer 0

Answers ( )

    0
    2021-09-14T22:46:21+00:00

    Answer:

    x=4/5

    y=1/5

    Step-by-step explanation:

    X/y=4…(1)

    1/x+1/y=1/xy…(2)

    From (1) make x the subject of formula

    x=4y…(3)

    Substitute (3) into (2)

    I/4y+1/y=1/4y^2

    Let the LCM be 4y

    1+4/4y=1/4y^2

    Cross multiply

    5(4y^2)=4y

    20y^2=4y

    Divide both sides by 4y

    5y=1

    Divide both sides by 5

    y=1/5

    Substitute y=1/5 into(3)

    x=4(1/5)

    x=4/5

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45:7+7-4:2-5:5*4+35:2 =? ( )