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Fittoniya [83]
3 years ago
7

If an equation has two roots -4 and 7, what could be the quadratic equation?

Mathematics
1 answer:
aleksklad [387]3 years ago
8 0

Answer:

f(x) = x^2 - 3x - 28

Step-by-step explanation:

The root -4 corresponds to the factor (x + 4); the root 7 corresponds to (x - 7).  The equation is thus f(x) = (x + 4)(x - 7) = x^2 - 3x - 28, or

f(x) = x^2 - 3x - 28

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-2x - 18 = 611-2x) + 4x
Serhud [2]

Answer:

x = (-629)/4

Step-by-step explanation:

Solve for x:

-2 x - 18 = 4 x - 2 x + 611

4 x - 2 x = 2 x:

-2 x - 18 = 2 x + 611

Subtract 2 x from both sides:

(-2 x - 2 x) - 18 = (2 x - 2 x) + 611

-2 x - 2 x = -4 x:

-4 x - 18 = (2 x - 2 x) + 611

2 x - 2 x = 0:

-4 x - 18 = 611

Add 18 to both sides:

(18 - 18) - 4 x = 18 + 611

18 - 18 = 0:

-4 x = 611 + 18

611 + 18 = 629:

-4 x = 629

Divide both sides of -4 x = 629 by -4:

(-4 x)/(-4) = 629/(-4)

(-4)/(-4) = 1:

x = 629/(-4)

Multiply numerator and denominator of 629/(-4) by -1:

Answer: x = (-629)/4

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4 years ago
What is good for your health
Paha777 [63]

Answer:

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Step-by-step explanation:

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3 years ago
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Please help me with this question ❤️
scoundrel [369]

Answer:

The formula to find the volume of a cylinder is V = πr2h

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The answer is 391.8

I hope this helps please mark me Brainliest! Have a nice day!

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3 years ago
Amanda's jewelery box is in the shape of a cube that has 6-inch edges what is the volume of Amanda's jewelry box
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