anonymous 5 years ago Use the quadratic formula to solve x^2 – 2x = 2. Can you also solve by factoring?

1. anonymous

no u cant u need ot use the formula because nothing can be multiplied to make -2 and add up to also equal -2...so u need to use the formula

2. anonymous

-2 + 1 = -2

3. anonymous

how can i solve this using the quadric formula? Is it (x+-2)(x-1)=0??

4. anonymous

quadratic formula is $-b \pm ((\sqrt{b ^{2}-4ac})/2a)$

5. anonymous

u substitue values in that equation, ur equation has to be of formAx+Bx+C=0

Militarpolica, have you solved quadratics using the formula before?

$(-b \pm \sqrt{b ^{2}-4ac})/2a$

To get you started, in your quadratic equation, a=1, b=-2, and c=-2

$(2\pm \sqrt{4+8})/2=(2\pm \sqrt{12)}/2=(2\pm2\sqrt{3})/2=1\pm \sqrt{3}$