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

Choose the substance with the lowest viscosity. Cl₂CHCHCI₂ Cl₂CHCH₂Cl Cl3CCHC12 CICH₂CH₂Cl Cl3CCC13
How were members able to join the House of Commons?
Correct the false sentences. How many correct sentences (✓) are there? What do you notice about them? 1 The Mandarin Oriental is cheaper than the Plaza. X No, i
Dentro de 5 años tendré el doble de la edad que tuve hace 10 años ¿Qué edad tengo?
PLEASE HELP!! I WILL GIVE BRAINLIEST AND FIVE STARS!!
The young born of living organisms they are the children
есе на тему в чому зіткане щастя
Which numbers make a true statement when placed in the box? 11.436> A:11.422 B:11.484 C:11.621 D:11.286
Assume that the distributions for the following scenarios are normal. Use the normal standard table to find the following probabilities. Round z-scores to the n
Solve g(x) = 10, if g(x) = 2/x+1​