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2014-11-20T21:49:22+08:00

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1.(2x+3)/(x+2), (x=1)
[2(1)+3]/(1+2)
(2+3)/(3)
=5/3

2.(2x^2+5x+4)/(2x+5), (x=-2)
[2(-2)^2+5(-2)+4]/[2(-2)+5]
[2(4)-10+4]/(-4+5)
(8-10+4)/1
2/1
=2

Hope this helps =)
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then after i got the 8-10+4 I add all of them resulting to 2
ohh! i just forgot about the like and unlike signs .. sorry ^^ btw. thanks again mr. math genius =)
i am not a math genius o_O
you are! (y)
no I am not o_O
2014-11-20T23:21:18+08:00
1. 2(1)+3/(1)+2
    2+3/ 3
    2+1= 3
    
2. 2(2)^2+5(-2)+4 / 2(-2)+5
    4^2-10+4 / -4+5
    16-10+4 / -4+5
    16-10-1-4+5
    16-10-1+1
    16-10
    =6

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