When using the quadratic formula we call the part under that radical the discriminant this part of the formula can be used to help us determine the types of solutions a quadratic equation has before we solve it check all of the statements that apply.
A. if the discriminant is zero there is real solution
B. if the discriminant is negative there are 0 real solutions
C. if the discriminant is positive there are 2 real solutions

A, B, and C

Step-by-step explanation:

The discriminant is denoted by b^2 - 4ac, and it can give us information about the roots of the quadratic equation.

It tells us that if:

- b^2 - 4ac < 0 , then there are 0 real solutions; they're all imaginary (involving the letter i, which is the square root of -1)

- b^2 - 4ac = 0 , then there is 1 real solution; this 1 solution has a multiplicity of 2 because the roots of the quadratic are the same number

- b^2 - 4ac > 0 , then there are 2 real solutions; there are no imaginary solutions

Looking at the possible choices, we see that all of A (A, I'm assuming you meant to write "if the discriminant is zero there is one real solution"), B, and C reflect the above properties.

Thus, they're all right.

A. if the discriminant is zero there is real solution

B. if the discriminant is negative there are 0 real solutions

C. if the discriminant is positive there are 2 real solutions

Step-by-step explanation:

B² - 4AC is the discriminant

If B²-4AC < 0, no real roots

If B2-4AC = 0, roots are real and repeated

If B²-4AC > 0, roots are real and distinct

answer: b.

step-by-step explanation:

it is b. cause the equations are put in the right category

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column