Cmac6887 Cmac6887

18-09-2018
Mathematics

contestada

Let f(x) = x^2 - 2x

a. Find and simplify f(5)
b. Find the value of x such that f(x)=3

Respuesta :

18-09-2018

a) f(5)= 5^2 -2•5= 25-10=15
b) x^2 -2x-3=0
(x-3)(x+1)=0 so
x=3 and x=-1 are the solutions

Answer Link

Otras preguntas

What are the solutions to the equation 0 = x2 – x – 6? Check all that apply. x = –3 x = –2 x = 0 x = 2 x = 3

find the area of the triangle (5.4cm)base (2cm) height dotted lines to make it a right triangle

A video game club charges a fixed annual membership fee of $20 and $2 per video game rented. Let f(n) represent the total annual cost of renting n video games.

Suppose Work Input Is 25 J , And The Output Distance 10 M . Factoring In The Effect Of Friction Which Must Be True About Output Force

Cuba, Guam, and the Philippines became United States possessions after the Spanish-American War. a. True b. False?

For a fusion reaction to happen, matter needs to be in which of the following states? a. plasma b. gas c. liquid d. solid

Which of the following would be considered a source of error in an experiment? A. Laboratory mice are similar but not identical to each other. B. A student make

Which were results of the construction of the transcontinental railroad? Choose all answers that are correct. A. The rail line crossed long-established Native A

How does Jonathan Swift’s Gulliver’s Travels comment on the ties that bind together a family, community, or nation? Swift explains how national and religious id

Consider the following research question. Research Question: Why are pickles stored in salt water? Which hypothesis is based on this research question? A. Pickl