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nadezda [96]
3 years ago
8

Help!! I totally forgot how to do this.

Mathematics
1 answer:
Elden [556K]3 years ago
4 0

This could be COMPLETELY wrong but

(-2, 1)

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Using the quadratic formula to solve 4x2 – 3x + 9 = 2x + 1, what are the values of x?
yaroslaw [1]

Answer:

The value of x is:

x=\dfrac{5\pm \sqrt{103}i}{8}

Step-by-step explanation:

we have to use the quadratic formula to solve for x.

The equation is given as:

4x^2-3x+9=2x+1

which could also be written as:

4x^2-3x+9-2x-1=0\\\\4x^2-3x-2x+9-1=0\\\\\\4x^2-5x+8=0

The quadratic formula for the quadratic equation of the type:

ax^2+bx+c=0 is given as:

x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}

Here we have:

a=4, b=-5 and c=8.

Hence, by the quadratic formula we have:

x=\dfrac{-(-5)\pm \sqrt{(-5)^2-4\times 8\times 4}}{2\times 4}\\\\x=\dfrac{5\pm \sqrt{25-128}}{8}\\\\\\x=\dfrac{5\pm \sqrt{103}i}{8}

Hence, the value of x is:

x=\dfrac{5\pm \sqrt{103}i}{8}

8 0
3 years ago
Read 2 more answers
What percent of 57329 is 14382?
polet [3.4K]

Answer:

<h2>182.91 %</h2>

Step-by-step explanation:

<h3>spoiler alert: its 182.91 %</h3>
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Solve these questions
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Answer:

a) n=12/5. €==℅¥€®°×[°€™℅=×=π°√€^^=^¥€•π×{√|^

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Which line has a slope of 2 and goes through (2, 10)?
garik1379 [7]
Y= 2x+6
You just have to go back wards from what you have. You already know the slope is 2 and slope is the change is y over the change in x. 2=2/1
So every time you take away 1 from x, you’re going to take away 2 from y.
(2,10) will become (1,8) which will be come (0,6).
You know have your y intercept (6)
So the equation for the line is y=2x+6
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What is the domain of f(x)=3^x-2
Trava [24]

The domain of a function is what x-values can be put into the function where a valid output will occur.  Since you can put in any number for an exponent, and still get an answer, the domain is

ALL REALS

In Interval Notation : (-\infty, \infty)

Or Another way to say it

ℝ

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