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xxImHisGirlxx

  • 2 years ago

help !

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  1. xxImHisGirlxx
    • 2 years ago
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    What is the simplified form of each expression? 7x^-8 times 6x^3 42 over x^5 1 over 42x^5 42x^11 13x^-5 (-2x^8) times 3y^9 times 2x^4 3x^12y^9 -12x^72y^9 -12xy^21 -12x^12y^9

  2. phanta_seea
    • 2 years ago
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    a negative exponential means it is actually 1/ the exponential \[7*\frac{ 1 }{ x ^{8} } * 6 * x ^{3} = 42 * \frac{ x^{3} }{ x^{8} }\]

  3. xxImHisGirlxx
    • 2 years ago
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    i think c? for 1 and d for 2

  4. phanta_seea
    • 2 years ago
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    a) is 42 x ^5 ?

  5. phanta_seea
    • 2 years ago
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    it is not c because one of the x exponents has a negative sign the other has a positive

  6. xxImHisGirlxx
    • 2 years ago
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    so its a ?

  7. phanta_seea
    • 2 years ago
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    yes, I believe it should be a)

  8. xxImHisGirlxx
    • 2 years ago
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    and number 2?

  9. phanta_seea
    • 2 years ago
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    \[42 * \frac{ x^{3} }{ x^{8} }\] you can cancel the three X above and are left with 42 over x^5

  10. xxImHisGirlxx
    • 2 years ago
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    @thomaster

  11. phanta_seea
    • 2 years ago
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    \[(-2x^8) \times 3y^9 \times 2x^4 = -4 x^{12} \times 3 y^9=-12 x^{12}y^9\] yes, d) for second one

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