Asked by Shawn
Determine the type of number that the solutions of x^2 +5x+3=0 will be
I have the answer as rational
is that right?
I have the answer as rational
is that right?
Answers
Answered by
Reiny
if your quadratic has rational roots then it would factor, it does not
Also the discriminant would have to be a perfect square for rational roots. It is not.
b^2 - 4ac = 25-4(1)(3) = 13
so you would have two different irrational roots
Also the discriminant would have to be a perfect square for rational roots. It is not.
b^2 - 4ac = 25-4(1)(3) = 13
so you would have two different irrational roots
Answered by
bobpursley
b^2-4ac= 25-12=13
and exactly what is sqrt 13? I took it to 13 digits, and didn't see numbers repeating. Why did you say rational?
and exactly what is sqrt 13? I took it to 13 digits, and didn't see numbers repeating. Why did you say rational?
Answered by
jenney
2. A pool company will install a round swimming pool in the middle of a yard that measures 40 ft. by 20 ft. If the pool is 12 ft. in diameter, how much of the yard will still be available?: *
Answered by
brenna
2x^3 -17x^2+47-42
no posible
no posible