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January 27, 2015

January 27, 2015

Posted by **bill** on Thursday, April 26, 2012 at 5:47pm.

x+y=6

2. y=x^2-2x+1

y-3=x

How would I go about solving these?

- math -
**Reiny**, Thursday, April 26, 2012 at 6:27pm!. from the 2nd : y = 6-x

sub into the 1st:

x^2 + (6-x)^2 = 20

x^2 + 36 - 12x + x^2 - 20 = 0

2x^2 - 12x + 16 = 0

x^2 - 6x + 8 = 0

(x-4)(x-2) = 0

x = 4 or x = 2

2. from the 2nd: y = x+3

sub into the 2nd

proceed as above....

let me know what you got

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