4x^2-7x+1
whats the number of real solutions? and whats the discriminant

Question

4x^2-7x+1
whats the number of real solutions? and whats the discriminant

anonymous · Answer

zero real solutions... the discriminant is -2

anonymous · Answer

the dis is 33 i think

kinggeorge · Answer

Since the discriminant is $(-7)^2-4(4)(1) = 49-16=33$, and the greatest exponent is 2, it must have 2 real solutions.

anonymous · Answer

No... the equation for the discriminant is:
$$b^2-4ac$$

anonymous · Answer

ohhh.. right.. wow...

anonymous · Answer

anyways.. you have to formula for the discriminant hahah :)

anonymous · Answer

there are two real solutions is the number is greater than zero.. if the discriminant is zero then there is one solution.. if it's less than zero then there are no real solutions.

kinggeorge · Answer

A positive discriminant means 2 real root, a negative discriminant means 0 real roots, and a discriminant equal to 0 means 1 real root. 

What madscientist said...

anonymous · Answer

tx

kinggeorge · Answer

you're welcome.