anonymous
  • anonymous
What is the simplified form of 3 over 2x minus 5 + 21 over 8 x squared minus 14x minus 15 ?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
@ganeshie8
anonymous
  • anonymous
|dw:1436984714721:dw|
anonymous
  • anonymous
@jonathonneely33 @RosieF

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More answers

anonymous
  • anonymous
I think thw answer is 6(x+1)/2x-5(4x+3)
welshfella
  • welshfella
|dw:1436985315792:dw|
anonymous
  • anonymous
I agree
welshfella
  • welshfella
oops that 3 in first fraction not 8
welshfella
  • welshfella
|dw:1436985521026:dw|
welshfella
  • welshfella
now simplify the top part
anonymous
  • anonymous
12x+30
welshfella
  • welshfella
yep so that's (12x + 30) / (2x -5)(4x+3)
anonymous
  • anonymous
so is it 6(2x+5)/2x-5(4x+3)
welshfella
  • welshfella
oh yes you can factor the top , of course
anonymous
  • anonymous
:) Thanks!
anonymous
  • anonymous
What is the simplified form of 2 over x squared plus x minus 1 over x ?
anonymous
  • anonymous
I got x-1/x(x+1)
anonymous
  • anonymous
|dw:1436985928544:dw|
welshfella
  • welshfella
|dw:1436985938537:dw|
anonymous
  • anonymous
Yes
welshfella
  • welshfella
LCM is x(x^2 + 1)
anonymous
  • anonymous
uh-huh I got that too
welshfella
  • welshfella
|dw:1436986022735:dw|
anonymous
  • anonymous
so you'd get 1x^2+1
welshfella
  • welshfella
|dw:1436986170864:dw|
welshfella
  • welshfella
- (x - 1)^2 / (x(x^2 + 1))
anonymous
  • anonymous
so 1-x or x-1
anonymous
  • anonymous
I think it's x-1/x(x+1) maybe?
welshfella
  • welshfella
no you cant simplify any further
welshfella
  • welshfella
x^2 + 1 has no factors
anonymous
  • anonymous
ok but my answer choices are a. x-1/x(x+1) b. x-1/x(x+1) c. 2-x/x(x+1)
welshfella
  • welshfella
x^2 - 1 has but not with '+'
anonymous
  • anonymous
So A?
welshfella
  • welshfella
oh i've written x^2 + 1 instead of x^2 + x - i misread the question
anonymous
  • anonymous
haha it's okay :D
anonymous
  • anonymous
What is the simplified form of 1 over x-cubed all over 3 over x squared ?
welshfella
  • welshfella
|dw:1436986600662:dw|
welshfella
  • welshfella
is that right for the second one?
anonymous
  • anonymous
Yes!
anonymous
  • anonymous
What is the simplified form of 1 over x-cubed all over 3 over x squared ?
anonymous
  • anonymous
For this one, I got x/3
welshfella
  • welshfella
ok 2/ x(1 + x) - 1/x = 2 - (1 + x) / x(1 + x) = (1 - x) / x(1 + x)
anonymous
  • anonymous
Ok:) Thanks!
welshfella
  • welshfella
yw
anonymous
  • anonymous
Was I right for the last question?
welshfella
  • welshfella
|dw:1436987181448:dw|
welshfella
  • welshfella
|dw:1436987321899:dw|
welshfella
  • welshfella
to divide a fraction you invert the divisor then multiply

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