Question

how many solutions are there for 5x^2 + 7x -4 =0

Answer 1

can you calculate the discriminant?

Answer 2

use the quadratic formula to find the solutions. then check to see if they satisfy the equation.

Answer 3

number of solutions = highest defree of the polynomial

Answer 4

it does not say number of "unique" solutions

Answer 5

and neither does it say "real solutions"

Answer 6

7^2 - 4 (5) (-4)

Answer 7

7^2 - 4 (5) (-4) discriminant

Answer 8

Yes. So that would be 49+80 or 129 which is positive. So there are 2 real solutions.

Answer 9

thanks

Answer 10

yw

Answer 11

what are the approximate solutions of 2x^2 - x + 10=0?

Answer 12

\[x=\frac{1\pm \sqrt{1^2-4(2)(10)}}{4}\]

Answer 13

\[x=\frac{1\pm \sqrt{79}i}{4}=.25\pm 2.2i\]