Question

Can some help me with this?

11. Use the discriminant of the following quadratic equation to describe its solutions.
x2 - 16x + 64 = 0
I got x = 8
A. There are no solutions.

B. The solutions are real and distinct.

C. The solutions are real and equal.*

D. The solutions are complex.

Answer 1

6. Use the discriminant of the following quadratic equation to describe its solutions.
3x^2 + 7x + 2 = 0
I got
X = -2
X = -1/3

A. The solutions are real and distinct.

B. The solutions are real and equal.

C. The solutions are complex.

D. There are no solutions.

Answer 2

The problem says to use the discriminant. Do you know what the discriminant is?

Answer 3

no, could you explain it please?

Answer 4

The discriminant is the part of the quadratic equation that is under the radical: b^2-4ac

Answer 5

Oh okay

Answer 6

It determines the type of roots that you have.

Answer 7

If it is 0 then you have the square root of 0 which is 0 so then you add 0 and subtract 0 which is the same thing so there is only 1 root and it is real.

Answer 8

If the discriminant is positive then you have two roots which would be real.

Answer 9

If the discriminant is negative then you have two roots which are complex numbers.

Answer 10

for 11. I got C. and 6. I got B. am I incorrect?

Answer 11

C for 6 sorry

Answer 12

11. Real and equal
6. Real and distinct.

Answer 13

Oh okay, thank you! do you mind if I ask you 3 more questions I wanna know if I'm right

Answer 14

For number 11, the discriminant is 0
For number 6, the discriminant is 25

Answer 15

0k

Answer 16

(m^5)^3
(3sqrt(t))^2
k3/2

Answer 17

I'm stuck on those 3 problems

Answer 18

For the first one use this: (a^m)^n=a^(mn)

Answer 19

For the second one: [3sqrt(t)]^2=3^2[sqrt(t)]^2

Answer 20

For k3/2 that means 3k divided by 2 so you could write 1.5k