johnwiiick johnwiiick

11-09-2019
Mathematics

contestada

If f(x) = 2x3 + Ax2 + 4x – 5 and f(2) = 5.
what is the value of A?

Respuesta :

cosmicctrl cosmicctrl

11-09-2019

Answer:

A= -14/4

Step-by-step explanation:

[tex]f(x) = 2 {x}^{3} +a {x}^{2} + 4x - 5[/tex]

[tex]f(2) = 2 \times {2}^{3} +a \times {2}^{2} + 4 \times 2 - 5 \\ 5 = 16 + 4a + 8 - 5 \\ 5 = 19 + 4a \\ 4a = 5 - 19 \\ 4a = - 14 \\ a = - \frac{14}{4} [/tex]

Answer Link

Otras preguntas

What is the equation of a circle whose center is at the origin and whose radius is 9?

Which of the following did not grow or increase as a result of early farming? Villages, trade, life spans, cities.

does the symbol NA+ represent a sodium atom that has lost an electron

What led to the king Philips war

What is the maximum number of turns in the graph of this function? f(x)=4x^3-12x^2-x+15

are forces acting on an object when it is at rest? explain.

What doctor is concerned with the diagnosis and treatment of oral pathology?

Is 56/7 is a whole number

Find the ratio in simplest form. 2/3 to 3/2

In a lake, there is a patch of lily pads. Every day, the patch doubles in size. If it takes 48 days for the patch to cover the entire lake, how long would it ta