Question

help !

Answer 1

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

Answer 2

a negative exponential means it is actually 1/ the exponential

\[7*\frac{ 1 }{ x ^{8} } * 6 * x ^{3} = 42 * \frac{ x^{3} }{ x^{8} }\]

Answer 3

i think c? for 1 and d for 2

Answer 4

a) is 42 x ^5 ?

Answer 5

it is not c because one of the x exponents has a negative sign the other has a positive

Answer 6

so its a ?

Answer 7

yes, I believe it should be a)

Answer 8

and number 2?

Answer 9

\[42 * \frac{ x^{3} }{ x^{8} }\] you can cancel the three X above and are left with 42 over x^5

Answer 10

@thomaster

Answer 11

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