wow..Figs explanation is awsome..i did it the super long way...

but I get b after 2:30 minutes..Figs approach reduces this to less than 1 minute ...

If x=3/4 and y=1/5, what is the value of sqrt(x^2 + 6x + 9) - sqrt(y^2 - 2y + 1)

well x^2=9/16 x=9/2

so 9/16+9/2+9 well

i multiplied it by 16/16 so I get; 9/16+(9.8)/16 + (9.16)/16

which reduced to (9(1+8+16))/16 or (9.25)/16 so sqrt[(9.25)/16]=3.5/4

same thing with y=1/25-2/5+1

multiply by 25/25 you get 1/25-10/25+25/25= (1-10+25)/25=16/25

sqrt(16/25)=4/5

15/4-4/5= 59/20

B

Gotta luv Figs approach..