What is the discriminant of the polynomial below 2x^2+5x-8

Mathematics

1 answer:

Mademuasel [1]3 years ago

4 0

Answer:

89 2 irrational roots

Step-by-step explanation:

The discriminant Is b²-4ac when the equation is in the form

ax²+bx+c so in the equation

a=2 b=5 and c=-8

plug into the equation for the discriminant

so 5²-4(2)(-8)

25-(-64) 2 negatives make a positive so

25+64=89

since 89 isn’t a perfect square 2 irrational roots

You might be interested in

38 4/7% as a fraction

Lelu [443]

38 4/7 = 270/7

% (percent) means per hundred (1/100)

so, (270/7)% is same thing as 270/700 or 27/70.

Answer: 270/100 or 27/70

3 0

3 years ago

Arrange the following polynomial into descending order and identify the 3rd term.

Vera_Pavlovna [14]

Thank you for posting your question here at brainly. Feel free to ask more questions.

The best and most correct answer among the choices provided by the question is 18x.

Hope my answer would be a great help for you.

6 0

3 years ago

Read 2 more answers

Use the quadratic formula to solve the equation to the exact value or round to two decimal places.

lys-0071 [83]

First set everything to 0.
${x}^{2} + x - 5$
Giving you A= 1 , B= 1 and C= -5
Then input everything into the quadratic formula and either solve by hand or use a calculator.
Note exact values are found by hand, decimals are found using a calculator.