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azamat
3 years ago
9

What is the product of (-a+3)(a+4)? a^2-a+12 a^2-a-12 -a^2-a-12 -a^2-a+12

Mathematics
2 answers:
Nadusha1986 [10]3 years ago
6 0

Answer:

- a {}^{ 2}  - a  +  12

Damm [24]3 years ago
4 0

Answer:

-a^2 + -a + 12

Step-by-step explanation:

Expand the following:

(3 - a) (a + 4)

(3 - a) (a + 4) = (3) (a) + (3) (4) + (-a) (a) + (-a) (4):

-a a + 3 a - 4 a + 3 4

3×4 = 12:

-a a + 3 a - 4 a + 12

-a a = -a^2:

-a^2 + 3 a - 4 a + 12

Grouping like terms, -a^2 + 3 a + 4 (-1) a + 12 = -a^2 + (3 a - 4 a) + 12:

-a^2 + (3 a - 4 a) + 12

3 a - 4 a = -a:

Answer: -a^2 + -a + 12

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             8x = -64

               x = -64/8

               x = -8

A(-8,0)

Let C(a,b)

M is AC midpoint

(-8+a/2, 0 + b/2)  = M(4,6)

     (-8+a/2, b/2)  = M(4,6)

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-8+a/2 = 4          ; b/2 = 6

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  -8+a = 8          ; b = 12

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Find the major axis for the ellipse <br> x² + 16y2-96y + 128 = 0
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The major axis for the ellipse, x² + 16y² - 96y + 128 = 0 is the x-axis

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<h3>Equation of an ellipse</h3>

The equation of an ellipse centered at  (h,k) is

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Given x² + 16y² - 96y + 128 = 0, we convert it into the standard equation of an ellipse.

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