Ask
your own question, for FREE!
Mathematics
19 Online
Solve by using quadratic formula: 5x^2+x=5
Still Need Help?
Join the QuestionCove community and study together with friends!
We would like for this equation to be in the form \[ax^2 + bx + c = 0.\] That was we can see what a, b, and c are. First subtract 5 from both sides, \[5x^2+x-5=0\] Sometimes it helps to see the coefficient of 1, \[5x^2+1x-5=0\] Now a= 5, b = 1, c = -5. Plugging these values into the quadratic formula, \[x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\] \[=\frac{-(1) \pm \sqrt{(1)^2 - 4(1)(-5)}}{2(5)}\] \[=\frac{-1 \pm \sqrt{1 +20}}{10}\] \[=\frac{-1 \pm \sqrt{21}}{10}\] Now the square root of 21 does not simplify, so this is a final answer.
A= 5
not 1
oops
Thanks
Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!
Join our real-time social learning platform and learn together with your friends!
Join our real-time social learning platform and learn together with your friends!
Latest Questions
laylasnii13:
Poem/diary i wrote I Want Out Iu2019m so tired of screaming into walls. Every fight with my mom leaves something broken and itu2019s not just plates or slam
Countless7Echos:
Aye.. I need actually some help on the shading here.. if the light is from above too I just feel something is off.
Countless7Echos:
I don't know just no sketch doodle day :p finished a video already so I'm pretty
1 hour ago
7 Replies
0 Medals
19 hours ago
19 Replies
3 Medals
3 days ago
9 Replies
2 Medals