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Bumek [7]
2 years ago
15

What is the discriminant of the quadratic equation 2x² - x - 3=0?

Mathematics
1 answer:
Tamiku [17]2 years ago
6 0

The given quadratic equation is

2 {x}^{2}  - x - 3 = 0

comparing with

{ax}^{2}  + bx + c = 0

We get ,

a = 2 \\ b =  - 1 \\ c =  - 3

formula :

D =  {b}^{2}  - 4ac \\  \\ D =  {( - 1)}^{2}  - 4 \times 2 \times ( - 3) \\  \\ D = 1 - ( - 24) \\  \\D  = 1 + 24 \\  \\D  = 25.

Discriminant of given quadratic equation is 25 .

option (B) 25 ✔

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Ghella [55]
Hello!

The equation can be written as seen below. You only need a y-intercept and slope to write the equation.

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3 years ago
Which expression is equivalent to 3(m − 3) + 4?<br><br> 3m + 1<br> 3m − 5<br> 3m + 13<br> 3m − 3
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Answer:

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6 0
3 years ago
Read 2 more answers
What is the best approximation for the circumference of a circle with a radius of 125 m?
ANEK [815]

Answer:

Option B is correct

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Step-by-step explanation:

Circumference of the circle(C) is given by:

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As per the statement:

radius of the circle is 125 m

then substitute in [1] we have

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C = 785 m

Therefore, the circumference of a circle is 785 m

8 0
3 years ago
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