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

Determine whether each set of numbers can represent the sides of a triangle: {13, 9, 6} {12, 7, 20} {25, 50, 75}

zeros of h(x) =(-2x+4)(x+1)

Calculate the value of x How do I figure this out

The diagram above shows the parts of a flower. In which flower part does pollination take place?

Square PAST has vertex A at (- 4, 2) . PAST is reflected about the x - axis . It is then reflected again over the line y = - x . Which of the following is the c

7/12 fractions that is equivalent to 2/4

gas prices are projected to increase by 124% by april 2015. a gallon of gas currently costs $3.80. what projected cost of a gallon of gas for april 2015?

Special-purpose districts are run by members of a(n) Options- 1.Appointed board 2.elected board 3.mayoral committee 4.city council Please answer!!!!

blank bonds with people and demands physical contact and companionship?

A homeowner is building a square fence around his circular patio so that each side of the fence is tangent to the circle, as shown in the diagram below. The rad