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Eduardwww [97]
3 years ago
8

Solve using the quadratic formula. – 2^2 + 3x + 7 = 0

Mathematics
1 answer:
Phantasy [73]3 years ago
3 0

Answer:

x=−1

Step-by-step explanation

Step 1: Simplify both sides of the equation.

−22+3x+7=0

−4+3x+7=0

(3x)+(−4+7)=0(Combine Like Terms)

3x+3=0

3x+3=0

Step 2: Subtract 3 from both sides.

3x+3−3=0−3

3x=−3

Step 3: Divide both sides by 3.

3x

3

=

−3

3

x=−1

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HELPPP ASAP PLEASE FOR BRAINLEST
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Answer:

D

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A system of linear equations has infinite solutions when the graphs are the exact same line.

Therefore, the answer is D

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2 years ago
Whats is the diference of:
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Answer:

2h^2

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3 years ago
Which points have an x-value less than zero?
Zanzabum

Answer:

C, D, J

Step-by-step explanation:

Points to the left of the y-axis have a negative x- value

Points to the right of the y-axis have a positive x- value

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3 years ago
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3 years ago
1,-2,3,-4,5... <br><br> what’s the next two numbers in the pattern?
MrMuchimi

Answer:

The two numbers following 1,-2,3,-4,5...  are -6 and 7.

Step-by-step explanation:

index:   1   2   3   4   5 ....

value:    1  -2  3  -4   5

Let the index be n.  Then the first term is a(1), the secon is a(2), and so on.

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a(3) = 3*(-1)^(3-1)   =  3*(-1)^2 = 3 (correct)

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So the general formula for a(n)  is:    a(n)=n(-1)^(n-1)

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1,-2,3,-4,5, -6, 7

4 0
3 years ago
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