hodansin
hodansin hodansin
  • 24-06-2020
  • Mathematics
contestada

What is the solutions of x2 = –5x + 8?

Respuesta :

Аноним Аноним
  • 24-06-2020

Answer:

[tex]x=\sqrt{14.25} -2.5, x=-\sqrt{14.25}-2.5[/tex]

Step-by-step explanation:

Since moving it to one side can't be factored, I'm going to complete the square.

[tex]x^2+5x=8[/tex]

[tex]x^2+5x+6.25=8+6.25[/tex]

[tex](x+2.5)^2=14.25[/tex]

[tex]x+2.5=\sqrt{14.25}[/tex]

[tex]x=\sqrt{14.25} -2.5, x=-\sqrt{14.25}-2.5[/tex]

Answer Link

Otras preguntas

How many hours will a car use to travel at speed of 10km per hour if the distance is 2 miles​
ARDS The sequence of events in a story or novel is called the SAME А action B conflict OND с plot ON D setting
Suppose it only took 15 days for the Moon to revolve around the Earth? Would we still see all the phases of the Moon? Explain your answer?
[tex]\frac{9}{20} + 2\frac{9}{10}[/tex]
Which of the following is a reciprocal of 5
HELP ASAP!! PLEASE EXPLAIN! THIS IS Creating Equations and Inequalities of One-Variable
Please help me This is due tomorrow. Kelly scores 21 points per coin. After collecting a total of 2 coins,how many points will Kelly have scored in all?
PLEASE HELP DUE IN ALMOST AN HOUR PLEASE
Which rule describes the pattern shown? 41, 54, 67, 80, 93, 106
What are the opposites?