3 years ago

Expand: (3x + 4)(2x − 5)

Mathematics

1 answer:

BARSIC [14]3 years ago

8 0

Answer:

6x² - 7x - 20

Step-by-step explanation:

Use the so-called "FOIL" method of multiplying binomials:

First terms: 3x · 2x = 6x²

Outer terms: 3x · -5 = -15

Inner terms: 4 · 2x = 8 x

Last terms: 4 · -5 = -20

Then, after simplifying, we have 6x² - 7x - 20 (second answer choice)

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the length of the conjugate axis is 16

Step-by-step explanation:

We know that the general equation of a hyperbola with transverse horizontal axis has the form:

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Where the point (h, k) are the coordinates of the center of the ellipse

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2b is the length of the conjugate axis

In this case the equation of the ellipse is:

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