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3 years ago

Identify the values of a , b , and c in the following quadratic equation. 2 x2 + 3 x + 7 = 0

Mathematics

2 answers:

Liula [17]3 years ago

8 0

Depends on where you are in the math book but this would be the most simple way.
n= number
sqar(-1) = i

SCORPION-xisa [38]3 years ago

5 0

Answer:

a = 2, b = 3, c = 7

Step-by-step explanation:

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xxTIMURxx [149]

<h3><u>Question</u> :-</h3>

Is (x-2) is a factor of x³-3x²-x +7 –

Yes
No ☑

<h3><u>Explanation</u> :-</h3>

We are given –

Polynomial function, P(x) = x³-3x²-x +7

In order to check if x - 2 is a factor of x³-3x²-x +7 or not, we must show that P(2) = 0.

Let's find value of x!

$\qquad$ $\twoheadrightarrow\bf P(x) = x³-3x²-x +7$

$\qquad$ $\twoheadrightarrow\bf Q(x) =x - 2$

$\qquad$ $\twoheadrightarrow\bf If \:Q(x) = 0$

$\qquad$ $\twoheadrightarrow\bf x - 2 = 0$

$\qquad$ $\twoheadrightarrow\bf x = 2$

Now Put x = 2 into the polynomial –

$\qquad$ $\purple{\twoheadrightarrow\bf P(2) = 2³-3(2)²-2+7}$

$\qquad$ $\twoheadrightarrow\sf P(2) = 8 - 3 \times 4 +5$

$\qquad$ $\twoheadrightarrow\sf P(2) = 8 -12 +5$

$\qquad$ $\twoheadrightarrow\sf P(2) = 13-12$

$\qquad$ $\purple{\twoheadrightarrow\bf P(2) =1 }$

Since the value of the polynomial function st x = 2 is not Zero (0). Henceforth, ( x - 2) is a factor of x³-3x²-x +7.

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5 0

2 years ago

Students are selling grapefruits and nuts for a fundraiser. The grapefruits cost $1 each and a bag of nuts cost $5 each. They so

babymother [125]

Answer:

Step-by-step explanation:

6 0

3 years ago

Determine the slope of y=2x^2-4x+2.

bearhunter [10]

To find the slope we will need to differentiate!

Step 1: $y' = 4x-4$ // let's take the derivative with respect to x

Since there is no x value specified there is an infinite number of slope values that we can input into this equation.

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3 years ago

Please answer this question for me. dont scam i have an exam tomorrow

Vanyuwa [196]

Answer:

Step-by-step explanation:

The sum of interior angles of ΔOCB & ΔOCA = 180° x 2 = 360°

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3 years ago

Kelly works two jobs. She usually works at a retail store for 8 hours during the day and is paid $12.90 per hour by the store. I

quester [9]

Answer:

i believe its 12.55

Step-by-step explanation:

if you add both number, 12.90 and 12.20, then divide by 2.

you'll will gain the same result

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3 years ago