11ladyprincessatipv 11ladyprincessatipv

24-01-2022
Mathematics

contestada

show that x^2 + 2x + 5 is positive for all real values of x

Respuesta :

surjithayer10otahza surjithayer10otahza

24-01-2022

Answer:

Step-by-step explanation:

x²+2x+5

=x²+2x+1+4

=(x+1)²+4

≥ 4

∀ real x

Hence x²+2x+5 ≥ 4≥0

Hence it is always positive.

Answer Link

Otras preguntas

What value of m solves the equation 2^m = 1/8

The slowest animal ever discovered was a crab found in the Red Sea. It traveled with an average speed of 5.70km/yr. how long would it take this crab to travel 1

According to Charles Darwin, what was the result of natural selection? a. Over time, animals lost specialization. b. Over time, species became better adapted

508,000 in expanded form

How do you say "i hope he answers my question right, so i can make the right choices." In french?

900 is one tenth of what

Read the following excerpt from the Pact of Umar, which was an agreement between the Christians and the Islamic ruler, Umar. In this excerpt, the Christians exp

Which is an example of the bottleneck effect? A)Green beetles move to a new location and build a new colony there. B)Green beetles survive as birds don't see th

A person can achieve optimum daily nutrition by a. eating a variety of healthy foods. b. drinking at least six glasses of juice. c. excluding all fat from hi

is 3 tenths multiplied by 100 equal 300 thousandths