Question

Check my answers?
6. simplify x / 7x+x^2
--> 1/7+x where x/= 0,-7
7. simplify -14x^3 / x^3-5x^4
--> -14/1-5x where x /= 1/5, 0
8. x-2 / x^2+4x-12
--> 1/x+6 where x/= -6, 2
9.x^2-3x-10
dont know yet
10. 2/3a * 2/a^2
dont know yet
11. x+2/5x-15 * (10x^2-25x-15)
--> (2x+1)/5(x-3)
12. (x^2-16/x-1)
dont know yet

Answer 1

for 6-> it would be 1/7 + x^2

Answer 2

thats not one of the choices

Answer 3

are you sure? because there's no way that x^2 can be simplified to x without cancelling which cant be done because you've already cancelled out the x 's from x/7x

Answer 4

7 and 8 are right btw

Answer 5

yes the choices are
1/7+x; where x/= -7
1/7x; where x/= 0
1/7+x where x/= 0,-7
1/7

Answer 6

for 9, the answer would be simply be (x-5)(x+2) because you just split it up,
and 10 : \[\frac{ 2 }{ 3a }*\frac{ 2 }{ a^2 }\] =4/3a^3 when you multiply the numerators and the denominator together

Answer 7

for #9, thats not a choice but there is x-5; where x /=-2 ??

Answer 8

ya, that's also correct

Answer 9

how about 11 & 12?

Answer 10

thanks for your help btw

Answer 11

@Purplerainbowcherry

Answer 12

I'm not really sure about 12 because all I could simplify it to was (x+4)(x-4)/(x-1)

Answer 13

x+4/x-1 ?

Answer 14

that's the thing, I dont really get how the functions are suddenly disappearing in your choices, but if thats the answer that's closest then go for it I guess

Answer 15

i have no idea either tbh

Answer 16

how about this, you choose a value for x and see if you get the same answer for the original function, and for your simplified function

Answer 17

did you try what I said?