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Mashcka [7]
3 years ago
13

Solve −3x2 − 4x − 4 = 0

Mathematics
2 answers:
Yuki888 [10]3 years ago
8 0
Is it -3x * 2 or -3*2
I cant solve dis unless I know

kkurt [141]3 years ago
4 0
This is a quadratic formula with a general form of a²x + bx + c = 0. For quadratic equations, we can solve for its two roots using the quadratic formula shown in the attached picture.

a = -3
b = -4
c = -4

x = [-(-4) + √(-4)² - 4(-3)(-4)]/2(-3) = <em>2 + √-32/2</em>
x = [-(-4) - √(-4)² - 4(-3)(-4)]/2(-3) =<em> 2 - √-32/2</em>

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Let us find the length of rope Jules will need using the pythagoras theorem .

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Then the length of rope needed ( hypotenuse ) =

= Let us name the triangle that is formed as △ ABC . Then ;

In △ ABC :

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BC = The distance from the window to the moat ( base ) = 20 feet

AC = Length of rope needed ( hypotenuse ) =

= AB ² + BC² = AC² ( according to the pythagoras theorem the square on the hypotenuse will be equal to the sum of the squares on the other two legs )

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