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anonymous

  • one year ago

Solve: 25x2 − 36 = 0. x = 6, 5 x = −6, −5 x = 36 over 25, x = − 36 over 25 x = 6 over 5, x = − 6 over 5

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  1. anonymous
    • one year ago
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    @Luigi0210

  2. Nnesha
    • one year ago
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    difference of squares \[\huge\rm a^2-b^2=(a+b)(a-b)\]

  3. Nnesha
    • one year ago
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    take square root of both terms (sqrt of 1st term + sqrt of 2nd term)(sqrt of 1st term - sqrt of 2nd term)

  4. anonymous
    • one year ago
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    I am lost

  5. Nnesha
    • one year ago
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    here is an example if i have 4 i can write it as 2^2 power right ? so what number to the 2 power = 25

  6. anonymous
    • one year ago
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    5

  7. Nnesha
    • one year ago
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    yes right what about 36 ?

  8. anonymous
    • one year ago
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    6

  9. Nnesha
    • one year ago
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    right so you can write it as \[\huge\rm 5^2x^2-6^2\] which is same as \[\rm a^2-b^2=(a-b)(a+b)\]

  10. Nnesha
    • one year ago
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    a is first term and b is 2nd term what is a and b in ur equation ?

  11. anonymous
    • one year ago
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    a=5^2 and b=6^2

  12. Nnesha
    • one year ago
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    not just 5^2 a=5^2x^2 so write it as (a-b)(a+B)

  13. Nnesha
    • one year ago
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    ohh wait

  14. Nnesha
    • one year ago
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    a= 5x b=6 not squares

  15. Nnesha
    • one year ago
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    difference of squares \[\huge\rm\color{reD}{ a}^2-\color{blue}{b}^2=(\color{Red}{a}+\color{blue}{b})(\color{reD}{a}-\color{blue}{b})\]

  16. Nnesha
    • one year ago
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    well guess what its easy to take square roots |dw:1441217018547:dw|

  17. anonymous
    • one year ago
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    Sorry, @Nnesha I had to do something.

  18. Nnesha
    • one year ago
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    thats fine

  19. Nnesha
    • one year ago
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    let me know what you get :)

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