Question

Is 4x^2-17x+15 a prime polynomial?

Answer 1

Are you familiar with the discriminant formula?

Answer 2

No

Answer 3

If you have a quadratic in the form ax^2 + bx + c, then the discriminant D is


D = b^2 - 4ac

Answer 4

If the discrminant is a positive perfect square, then you can factor the original expression. If not, then you can't factor it and it's prime.

Answer 5

so it is a prime becuase you cant cut 15 in hoalf with out getting a decimal in there. so prime.

Answer 6

not quite

Answer 7

what are the values of 'a', 'b', and 'c'?

Answer 8

a is 2x
b is 7.5
but i dont know c

Answer 9

where did u get 7.5? @SPC

Answer 10

half of 15 is 7.5

Answer 11

compare

ax^2 + bx + c

to

4x^2-17x+15

we can see that a = 4, b = -17 and c = 15

Answer 12

i see what @jim_thompson5910 is saying

Answer 13

discriminant= b² − 4ac