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anonymous

  • 4 years ago

if y>0 then the square root of 25y^2-9y^2=?

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  1. anonymous
    • 4 years ago
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    4y

  2. Shayaan_Mustafa
    • 4 years ago
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    positive

  3. Shayaan_Mustafa
    • 4 years ago
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    @indianalexander how 4y?

  4. anonymous
    • 4 years ago
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    25y^2-9y^2 = 16y^2 root of 16y^2 = 4y

  5. Shayaan_Mustafa
    • 4 years ago
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    but she gave a condition. y>0 ok. let suppose y<0?

  6. Shayaan_Mustafa
    • 4 years ago
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    @indianalexander let us suppose y<0. then what will be the answer?

  7. anonymous
    • 4 years ago
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    it will still be positive as the square of a negative number is positive

  8. Shayaan_Mustafa
    • 4 years ago
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    I know i know. but if 4y is the answer. then what about condition which given?

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