Chrystal218 Chrystal218
  • 06-07-2015
  • Mathematics
contestada

Solve 5x2 = -30x - 65.

Respuesta :

Benjamin16
Benjamin16 Benjamin16
  • 10-07-2015
[tex]5x^{2}=-30x-65 \\ \\ 5x^{2}+30x+65 \ \ \ /:5 \\ \\ x^{2}+6x+13=0 \\ \\ \Delta=6^{2}-4*1*13=36-52=-16 \implies x\not\in R \\ \\ \sqrt{\Delta} =4i \\ \\ x_{1}= \frac{-6-4i }{2}= -3-2i \\ \\ x_{2}= \frac{-6+4i}{2}=-3+2i [/tex]
Answer Link
Аноним Аноним
  • 10-07-2015
5x2=−30x−65

 Subtract -30x-65 from both sides.

5x2−(−30x−65)=−30x−65−(−30x−65)

5x2+30x+65=0

 Use quadratic formula with a=5, b=30, c=65.

x = −30±√−400 / 10

No solution.
Answer Link

Otras preguntas

CAN SOMEONE HELP ME PLEASE MUCH THANK
need help with 3 english questions please.
Why did gregor mendel use peas in his experiments?peas grow very slowly.pea reproduction cannot be controlled.peas normally produce very few offspring.peas have
Please explain your answer when you found the answer (Only question number 9)
For f(x) = 7x +2, Find F(x) When X=0 And When X=1. Can Someone Please Help Me!!!
Entrepreneurs may be motivated to succeed in order to take care of their families.
What is the solution for C when 10 C minus f equals -13 + c d
2) McKinley lists four reasons as evidence that war with Spain/an invasion of Cuba was necessary. List the four reasons below in your own words. (4pts)
Lakshmi donates 20% percent of her income to charity. What fraction of her income does Lakshmi donate to charity?
HELP PLEASE I have to write 2 PARAGRAPHS please help me