(0, b),(3,1); d = 5 Solve for b. I must be stupid or something. I keep getting 15, 17.

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- Apr 23rd 2012, 04:44 PMKandersonCant solve distance formula problem.
(0, b),(3,1); d = 5 Solve for b. I must be stupid or something. I keep getting 15, 17.

- Apr 23rd 2012, 05:02 PMsyedmaheenRe: Cant solve distance formula problem.
sqr root((3-0)^2)+)(1-b)^2) =5

((3-0)^2)+)(1-b)^2) = 5^2

1-2b+b^2=9

b^2-2b-8=0

b^2 -4b +2b -8=0

b(b-4)+2(b-4)=0

(b-4)(b+2)=0

b=4,-2. - Apr 23rd 2012, 05:06 PMKandersonRe: Cant solve distance formula problem.
Are you sure, my calculator keeps giving me 5, -3 Your probably right.

- Apr 23rd 2012, 05:39 PMsyedmaheenRe: Cant solve distance formula problem.
No calculator is right,and the one below me is right,i just flipped halfway through the problem,but essentially thats how you do it.

- Apr 23rd 2012, 06:06 PMskeeterRe: Cant solve distance formula problem.
$\displaystyle (3-0)^2 + (1-b)^2 = 5^2$

$\displaystyle 9 + (1 - 2b + b^2) = 25$

$\displaystyle b^2 - 2b - 15 = 0$

$\displaystyle (b - 5)(b + 3) = 0$

$\displaystyle b = 5$ , $\displaystyle b = -3$ - Apr 24th 2012, 05:39 AMHallsofIvyRe: Cant solve distance formula problem.