julelovesm julelovesm

21-02-2018
Mathematics

contestada

What are the roots of the polynomial equation? x2+6x−72=0

Respuesta :

dannielle dannielle

21-02-2018

⇒Δ=6^2+4*72= 36+288=324
V324=18

x1= ( -6+18)/2=6
x2= (-6-18)/2=-24/2=-12

⇒ x1= 6
x2= - 12

Answer Link

Otras preguntas

What percent is 52 of 64

Which explains why U.S. leaders are eager to get North Korea to sign the Nuclear Nonproliferation Treaty? a. North Korea has targeted U.S. allies with threats

In addition to giving retirees money, Social Security was intended to directly stimulate the economy by requiring employers to pay a new tax. opening up jobs fo

Which one of the following words means the same as cautious? a. Careful b. Caring c. Steady d. Timid

Which one of the following words is not an object of a preposition? a. pockets b. cushions c. afternoon d. bed

In the equation x^2 mx n = 0, m and n are integers. The only possible value for x is –3. What is the value of m ? a. 3 b. –3 c. 6 d. –6 e. 9

Which of the following best explains how the United States acquired Alaska? a. The United States claimed Alaska after winning a war with Russia. b. The United

What is the first step in using a balance beam scale? a. Zero the balance b. Record the mass values c. Put the mass on the tray d. Use the counter weights a

My shoes were only $49.50, but I also had to pay 4% tax. What was my total?

Failing to accurately cite even a single source a. can result in accusations of plagiarism. b. will definitely result in errors with other citations. c. isn'