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3 years ago

Can someone please help me with this it would really help?!

Mathematics

1 answer:

Marat540 [252]3 years ago

8 0

Answer:

4x^4-4x^3-16x^2+16x

Step-by-step explanation:

To do this problem, you have to multiply the top equation by the bottom. To do this, you would multiply each term of x^2+x-2 by (-8x) and (4x^2). Think of it like the distributive property. We multiply (x^2) with (-8x) and so on. With the -8x term we get (-8x^3-8x^2+16x).

Now you do the same for the term 4x^2 to get (4x^4+4x^3-8x^2).

Then you combine like terms to get 4x^4-4x^3-16x^2+16x.

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3 years ago

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3 years ago

Choose all pairs of points that are reflections of each other across both axes. A. (–412, 1) and (–1, 412) B. (2.5, –1) and (–21

SVEN [57.7K]

Answer:

The correct option is;

(-2, 213) and (2, -213)

Step-by-step explanation:

The reflection of a point across the x-axis is given as follows;

The coordinates of the point of the pre-image = (x, y)

The coordinates of the point of the image after reflection = (x, -y)

The reflection of a point across the y-axis is given as follows;

The coordinates of the point of the pre-image = (x, y)

The coordinates of the point of the image after reflection = (-x, y)

Therefore, from the given points, The reflection across the y-axis of the point (-2, 213) is (2, 213) and the reflection across the x-axis of the point (2, 213) is (2, -213)

4 0

3 years ago

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Natasha2012 [34]

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4 0

4 years ago

Read 2 more answers

If b is the midpoint of ac, ab=12x+11 and bc= 14x - 1, find AB

xxMikexx [17]

Answer:

AB = 83

Step-by-step explanation:

The mid-point of any segment divides the segment into two equal parts

∵ B is the midpoint of segment AC

→ That means B divides AC into two equal segments AB and BC

∴ AB = BC

∵ AB = 12x + 11

∵ BC = 14x - 1

→ Equate them

∴ 14x - 1 = 12x + 11

→ Subtract 12x from both sides

∵ 14x - 12x - 1 = 12x - 12x + 11

∴ 2x - 1 = 11

→ Add 1 to both sides

∵ 2x - 1 + 1 = 11 + 1

∴ 2x = 12

→ Divide both sides by 2

∵ $\frac{2x}{2}=\frac{12}{2}$

∴ x = 6

→ To find AB substitute x by 6 in its expression

∵ ab = 12x + 11

∵ x = 6

∴ AB = 12(6) + 11

∴ AB = 72 + 11

∴ AB = 83

3 0

4 years ago