SOLUTION: x^2-8x+15=0
how do you solve this problem, and how do you use the discriminant?
Algebra.Com
Question 249938: x^2-8x+15=0
how do you solve this problem, and how do you use the discriminant?
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
x^2-8x+15=0
(x-5)(x-3)=0
x-5=0
x=5 ans.
x-3=0
x=3 ans.
The discriminate is b^2-4ac.
-8^2-4*1*15=-64-60=4
Because the answer is a perect square then the answers are 2 real rational numbers.
RELATED QUESTIONS
How do you solve... (answered by Alan3354)
How do you solve this problem in simplest radical form.... (answered by Mathtut)
how do you solve this equation:... (answered by edjones)
How do you solve:
3x^2 + 8x = 0
Thank... (answered by Fombitz)
What is the discriminant and how do you find it if you are given a quadratic equation?... (answered by rfer,Gogonati)
how do you solve 5x - 8x =... (answered by rfer)
How do you solve this problem... (answered by addingup)
how do you solve... (answered by robertb)
Please help me solve this problem:
Use the discriminant to predict how many and what... (answered by solver91311)