jomilojuangel jomilojuangel

14-02-2019
Mathematics

contestada

given that (2x-1)(x+5)=2x^2-mx-5, what is the value of m

Respuesta :

14-02-2019

expand the left side
2x(x + 5) - 1(x + 5) = 2x² - mx - 5
2x² + 10x - x - 5 = 2x² - mx - 5
2x² + 9x - 5 = 2x² - mx - 5
cancel 2x² and -5
9x = - mx

m = -9
sorry i was wrong, my mistake hehe

Answer Link

Otras preguntas

SECOND TIME ASKING HELP!!! 6. Jackie has n nickels and q quarters in her pocket. The total value of the coins is at least $24.75. Write an inequality that repre

Im struggling with these 2 problems

Any gîrls here free to talk

What happened to Old Major? A. He died peacefully in his sleep. B .Mr. Jones sent him to a neighboring farm. C. Mr. Jones killed him for the meat. D. Mr. Jones

this is for medical detectives

I don't get what they mean by writing an opinion Can I get some help?

Write the equation so that a = 1: x2 + -6 x = -13 Complete the square: x2 – 6x + = –13 +

the answer is 20/13 you can simplify the answer.

How can you use an equation to make a prediction from a pattern?

Roxy's new employer pays employees bimonthly, which is twice a month. She'll earn $30 per hour with the new company. She plans to continue making extra money by