shyannpotter shyannpotter

02-01-2021
Mathematics

contestada

If f(x) = x2 – 2x and g(x) = 6x + 4, for which value of x does (f + g)(x) = 0?
-4
-2
2
4

Respuesta :

jimrgrant1 jimrgrant1

02-01-2021

Answer:

x = - 2

Step-by-step explanation:

(f + g)(x) = f(x) + g(x)

f(x) + g(x)

= x² - 2x + 6x + 4

= x² + 4x + 4

Equating to zero

x² + 4x + 4 = 0 ← left side is a perfect square

(x + 2)² = 0, thus

x + 2 = 0 ( subtract 2 from both sides )

x = - 2

Answer Link

Otras preguntas

which of the following statements is true both unicellular and multicellular are at risk having to much water entering cells if exposed to water containing no s

what type of colonial protest was the most effective? How was it effective?

Can you put Enmity in a sentence?

Translate the sentence into an inequality. Twice the difference of a number and 7 is at most −20 . Use the variable y for the unknown number.

How does deforestation affect bear population?

2/7 find the reciprocal

Use complete sentences to explain the relationship between the Earth's crust and the Earth's ocean sizes.

All of the following are volcanoes created from lava and ash except: a. Composite c. Shield b. Cindercone d. Caldera

Which type of phrase do the underline words form in this sentence?

The daily patrons of a local town restaurant became ill with nausea, vomiting, and diarrhea. without knowing the cause, what should be done immediately to help