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anonymous

  • one year ago

Help me if possible!! Solve for x: 25x2 - 36 = 0 (2 points) x = 6, 5 x = -6, -5 x = , x = - x = , x = -

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  1. pooja195
    • one year ago
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    What are the last 2 choices?

  2. anonymous
    • one year ago
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    for c it is 36 over 25 and negative 36 over 25 (as in the whole equation. for d it is 6 over 5 and negative 6 over 5 (whole equation is neg)

  3. anonymous
    • one year ago
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    sorry it idnt come through

  4. pooja195
    • one year ago
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    Add 36 to both sides. \[\huge~\rm~25x^2−36+36=0+36\]\[\huge~\rm~25x^2=36\]

  5. pooja195
    • one year ago
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    Do you know what to do from here?

  6. anonymous
    • one year ago
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    do i divide??

  7. anonymous
    • one year ago
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    wait no

  8. pooja195
    • one year ago
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    yes! :D I added 36 to both sides because we are trying to ISOLATE x :) Next step is indeed to divide!

  9. anonymous
    • one year ago
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    oksy

  10. anonymous
    • one year ago
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    is the answer d?

  11. pooja195
    • one year ago
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    Thats correct

  12. anonymous
    • one year ago
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    thank you so much.

  13. pooja195
    • one year ago
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    You simplyfy the orginal answer which is 36/25

  14. pooja195
    • one year ago
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    No problem :)

  15. pooja195
    • one year ago
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    \(~~~~~~~~~~~~~~~~~~~~~~~~~~\Huge{\color{red}{\heartsuit}\color{orange}{\bigstar}\color{yellow}{\heartsuit}\color{green}{\bigstar}\color{blue}{\heartsuit}\color{purple}{\bigstar}\color{hotpink}{\heartsuit}}\)\(\Huge\bf\color{#FF0000}W\color{#FF4900}e\color{#FF9200}l\color{#FFDB00}c\color{#FFff00}o\color{#B6ff00}m\color{#6Dff00}e\color{#24ff00}~\color{#00ff00}t\color{#00ff49}o\color{#00ff92}~\color{#00ffDB}O\color{#00ffff}p\color{#00DBff}e\color{#0092ff}n\color{#0049ff}S\color{#0000ff}t\color{#2400ff}u\color{#6D00ff}d\color{#B600ff}y\color{#FF00ff}!\)\(~~~~~~~~~~~~~~~~~~~~~~~~~~\Huge{\color{red}{\heartsuit}\color{orange}{\bigstar}\color{yellow}{\heartsuit}\color{green}{\bigstar}\color{blue}{\heartsuit}\color{purple}{\bigstar}\color{hotpink}{\heartsuit}}\)\(\Large\bf\color{Lime}{Please,\ don't\ hesitate\ to\ ask\ questions!}\)\(\Large\bf\color{magenta}{We're\ here\ to\ help!}\Large\color{magenta}{\ddot\smile}\)

  16. anonymous
    • one year ago
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    \[25x^2 - 36 = 0\\(5x)^2-6^2=0\\(5x+6)(5x-6)=0\ [use\ a^2-b^2=(a+b+(a-b)]\\ \implies\ either\ (5x+6)=0\ or\ (5x-6)=0\\ \implies\ either\ 5x=-6\ or\ 5x=6\\ \implies\ either\ x=\frac{ -6 }{ 5 }\ or\ x=\frac{ 6 }{5 }\]

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