umahmad umahmad

21-06-2015
Mathematics

contestada

the sum of a number and twice is square is 36.find the numbers?

Respuesta :

konrad509 konrad509

21-06-2015

[tex]x+2x^2=36\\ 2x^2+x-36=0\\ 2x^2+9x-8x-36=0\\ x(2x+9)-4(2x+9)=0\\ (x-4)(2x+9)=0\\x=4 \vee x=-\dfrac{9}{2}[/tex]

Answer Link

Otras preguntas

If a schoolyard is kept open for public play, what is most likely to happen? The schoolyard will fall into dangerous disrepair. The community children will be p

Mosquitoes must lay their eggs in standing water. What would most likely happen to the mosquito population in an ecosystem that experienced less rainfall than u

The most accepted theory about the origin of Earth is that it formed by a process called planetary _____. differentiation accretion condensation mixing

Analyze the sentences and choose the one that best explains what is an indirect object. A) An indirect object is a person who receives the action of the verb di

To ensure proper nutrition, my daily diet includes a variety of beans and green lettuce. Which is the best example of a paraphrase for the sentence? To stay hea

HELP ME PLEASE!!! I need to have it by the end of today!!

Which sentence contains an error in comparative/superlative usage? a. Toddlers tend to run more frequently than they walk. b. That was the most incredible com

HELP PLEASE AND THANK YOU

The mass extinction that was most likely caused by the formation and retreat of glaciers was the _____ extinction. Cretaceous-Tertiary End Triassic Permian-Tria

How did the light dress up for the costume party