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Tresset [83]
3 years ago
12

How many real roots does he function f(x)=x^2+8x-2 have? A 0 B 1 C 2 D 72

Mathematics
1 answer:
jarptica [38.1K]3 years ago
5 0
I might be wrong but in the calculator it says 0 so is it A
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kifflom [539]

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Step-by-step explanation:

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2 years ago
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Find the equation of the line passing through the points (2 11) and (-8 -19)
Svet_ta [14]

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Y=2x+7

Step-by-step explanation:

To find the gradient of the line u have to subtract the y intercepts and the x intercepts

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faltersainse [42]

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3 years ago
Use the zero product property to find the solutions to the equation x2 – 13x + 30 = 0.
alukav5142 [94]

Answer:

<u>The solutions to this quadratic equation are 10 and 3.</u>

Step-by-step explanation:

1. Let's recall the formula for solving this type of equations, called quadratic equations:

 x = ( - b +/- √ b² - 4ac)/ 2a

The equation given is  x2 – 13x + 30 = 0,

where a = 1, b = - 13 and c = 30

Now replacing with the real values, we have

x = [ - (-13) +/- √ (-13)² - 4 * 1 * 30] / 2 * 1

x = [ 13 +/- √ 169 - 120] / 2

x = [13 +/- √ 49]/ 2

x = [ 13 +/- 7 ]/ 2

<u>x₁ = 13 + 7/2 = 20/2 = 10</u>

<u>x₂ = 13 - 7/2 = 6/2 = 3</u>

8 0
3 years ago
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Answer:

I need more information to calculate it for you

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3 years ago
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