carol94 carol94

03-11-2014
Mathematics

contestada

i need help with math 1010
completing the square
x^2-9x=10

Respuesta :

konrad509 konrad509

03-11-2014

[tex]x^2-9x=10|+20.25\\ x^2-9x+20.25=30.25\\ (x-4.5)^2=30.25\\ x-4.5=5.5 \vee x-4.5=-5.5\\ x=10 \vee x=-1[/tex]

Answer Link

Otras preguntas

What causes the economy to move from its short-run equilibrium to its long-run equilibrium? the government must increase spending to increase aggregate demand

Were the colonists justified in going to war with england

What fraction of a sample of 6832ge, whose half-life is about 9 months, will remain after 2.9 yr ?

Seraphina is driving two hours to visit her family. For the first hour, she traveled at a speed of 59 miles per hour. Then, in the second hour, she traveled at

Ryan wants to transform electrical energy into light energy. He decides to build a complete circuit that will operate a light bulb. What materials does he need?

Suzy fills a 1 pint thermos with milk each day for lunch how many times will she be able to fill her thermos with 1/2 gallon of milk

How does the language in the first line of the preamble appeal to the readers

List three reasons why the colonist became angry with parliament and the king

Archie has a photograph that has a width of 8 inches and a length of 10 inches. He wants to enlarge the photo to make a poster for his room. He wants the width

According to the rational root theorem, which is a factor of the polynomial f(x) = 6x^4 - 21x^3 - 4x^2 + 24x - 35 A) 2x - 7 B) 2x + 7 C) 3x - 7 D) 3x + 7