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xxImHisGirlxx
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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
phanta_seea
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a negative exponential means it is actually 1/ the exponential
\[7*\frac{ 1 }{ x ^{8} } * 6 * x ^{3} = 42 * \frac{ x^{3} }{ x^{8} }\]
xxImHisGirlxx
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i think c? for 1 and d for 2
phanta_seea
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a) is 42 x ^5 ?
phanta_seea
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it is not c because one of the x exponents has a negative sign the other has a positive
xxImHisGirlxx
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so its a ?
phanta_seea
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yes, I believe it should be a)
xxImHisGirlxx
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and number 2?
phanta_seea
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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
xxImHisGirlxx
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@thomaster
phanta_seea
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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