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Expand: (3x + 4)(2x − 5)

12x − 10x

6x^2 −7x − 20

6x^2 − 20

5x − 1


Simplify: (3x + 2y) - (x + 2y)

4x + 4y

4x

2x

2x + 4y


If 1/2x + 2/3y = 6, what is 3x + 4y?

12

18

36

24


In the polynomial 4x^3 + 5x^2 − 12, what is the coefficient of the x^2 term?

5

0

-12

4


Evaluate f(x) = 4x + 3x^2 − 5 when x = -2.

-25

23

-49

-1

Respuesta :

altavistard

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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