Need help , don’t understand !!

Mathematics

1 answer:

mixer [17]3 years ago

5 0

Quadratic Formula is (-b ±√(b²-4ac))/2a

With that being said:

y=2x²-5x-1 is in the correct form of ax²+bx+c

Now just plug in:

5±√(25-4(2 x-1))

5± √25+8

(5±√33)/2(2)

Answer is D

100% Sure

Brainliest?

You might be interested in

I need help correct gets crown answer quick!

Ne4ueva [31]

Answer:

6,7, and 10

Step-by-step explanation:

If this answer helped you then please mark it as brainliest so I can get to the next rank

8 0

2 years ago

Read 2 more answers

Key Features of Graphs of Functions - Part 1

dexar [7]

Answer:

See below

Step-by-step explanation:

Q1.

In a function, every output value corresponds to exactly one input

value.

The words to be interchanged are underlined. The function as per definition has exactly one output for each input.

Q2.

Part A

Because it has 2 same input value for 2 different output values

Part B

The two points are (4, -2) and (4, 2)

5 0

3 years ago

Read 2 more answers

Jamie draws a triangle he says two of my three angles are obtuse

Vikentia [17]

A triangle's interior angles will always add up to 180 degrees.

When one interior angle gets larger, the other angles must decrease in size.

If you attempt to make a triangle with two obtuse angles, you will find you can't do it in three lines. But you need an extra line in order to close the shape. But it won't be a triangle.

5 0

3 years ago

Solve for q(x) and r(x). (4x^3-3x^2+5x-7)/(x-2) = q(x)+ r(x)/(x-2)

4vir4ik [10]

By synthetic division,

q(x) = 4x^2 +5x +15

r(x) = 23