umahmad
umahmad umahmad
  • 21-06-2015
  • Mathematics
contestada

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

Respuesta :

konrad509
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

PLZ HELP ASAP SOLVE SIMILLAR TRAINGLES
Which two factors led to Latin American revolutions? (TWO ANSWERS) a. the successful Fench Revolution. b. the invasion of Spain by the French.?
Given that 7^2=12^x, evaluate 12^2x
You are trying to convince your classmates to each donate $5 to abandoned animals
PLZ HELP ASAP SIMMILIAR AND CONGRUENT TRIANGLES
Apart from entertaining readers, what are the other two main purposes of Edgar Allan Poe's "The Masque of the Red Death"? A)to reveal the prince's wealth B)t
Idki also tell me the equation and the CORRECT answer!!!!!!!!!!! Thank You
Spain france and who helped the american colonies in their rebellion against great britain
If the radius of a circle is 5 centimeters, how long is the arc subtended by an angle measuring 60°?
Find the number that is 2/3 of the way from 3/4 to 3 5/12 Need help pleaseee will give brainliest