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Can anyone prove that √7 is …

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Can anyone prove that √7 is irrational number?

    • Posted by Rohit Sahani? 6 years, 10 months ago

    CBSE > Class 10 > Mathematics
    • 5 answers

    Anushka K 6 years, 10 months ago

    Let √7 be a rational number say p/q where q is not equal to zero and p and q are coprime. √7=p/q Sq. Both side 7=p²/q², 7q²=p²--------(1) 7q² is divisible by 7, p² is divisible by 7, p is divisible by 7, Let p=7a, Putting the value in equation 1. 7q²=(7a)² 7q²=49a² q²=7a² 7a²is divisible by 7 q² is divisible by 7 q is divisible by 7 Both p and q have common factor 7. Therefore our supposition is wrong. √7 is irrational.

    1Thank You

    Rohit Sahani? 6 years, 10 months ago

    Mujhe solution chahiye yess nhi

    2Thank You

    Sumayya Fazil 6 years, 10 months ago

    Yes

    3Thank You

    Puja Sahoo? 6 years, 10 months ago

    Bt solution kaise dun???

    3Thank You

    Puja Sahoo? 6 years, 10 months ago

    Kya rohit ji.... prove ho gya....mera to

    3Thank You

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    Posted by Kanika . 1 month, 2 weeks ago

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