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anonymous
 one year ago
Simplify completely quantity 5 x squared plus 9 x minus 2 over quantity x squared plus 12 x plus 20 times quantity x squared plus 17 x plus 70 over quantity 15 x minus 3.
anonymous
 one year ago
Simplify completely quantity 5 x squared plus 9 x minus 2 over quantity x squared plus 12 x plus 20 times quantity x squared plus 17 x plus 70 over quantity 15 x minus 3.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Is this correct? \[\frac{ 5x^2 + 9x  2 }{ x^2 + 12x + 20 } \times \frac{ x^2 + 17x + 70 }{ 15x  3 }\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Try factorising each part of the expression, you'll find some factors on the top and bottom of the fraction that cancel out.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok I did but I think im doing something wrong

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0What did you get when you factorised it all?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[5x2+9x2 \] \[(x+2) (x+10)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0\[(x+10) ( x+7)\] \[3(5x)\]

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0The first one can be factorised, so you get \[5x^2 + 9x  2 = (5x1)(x+2)\] and you forgot a term on the denominator of the 2nd bit, you should get \[3(5x1)\] instead of \[3(5x)\] When you change that, you should get a bunch of cancellation :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0so my answer should be (x+7) over 3

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0This is correct! The answer was A) (x+7)/3
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