leelee3214h leelee3214h
  • 02-09-2017
  • Mathematics
contestada

what is x squared plus six x minus twenty seven =0

Respuesta :

WojtekR
WojtekR WojtekR
  • 02-09-2017
[tex]x^2+6x-27=0\\\\x^2-3x+9x-27=0\\\\x\big(x-3\big)+9\big(x-3\big)=0\\\\\big(x+9\big)\big(x-3\big)=0\\\\\\x+9=0\qquad\vee\qquad x-3=0\\\\\boxed{x=-9\qquad\vee\qquad x=3}[/tex]
Answer Link

Otras preguntas

What is the answer to 17=5k-2
WHO WERE THE "MOUND BUILDERS OF THE Mississippi River VALLEY"?
Suppose the plates beneath Earth's surface stopped moving. What do you think would happen? Explain your answer.
integer problems that equal 36
What is the answer to 17=5k-2
what is value of digit 4 in 1.848 meters in decimal and fraction
Why did the colonial army invade Canada? a. to prevent a British invasion from the north b. to recapture lost land and territory from the French and Indian War
how did capitalism change the balance of power in European countries?
What is 0.2 as a whole number?
Is this Linear y=4000-70x if it is how do you know