SarayahN740304 SarayahN740304
  • 03-11-2022
  • Mathematics
contestada

x^2-18x-57=6 solve each equation by completing the square

Respuesta :

MeridithO590729 MeridithO590729
  • 03-11-2022
[tex]x^2-18x-57=6[/tex][tex]x^2-18x+81-81-57=6[/tex][tex](x^2-18x+81)-81-57=6[/tex][tex](x-9)^2=6+57+81[/tex][tex](x-9)^2=144[/tex][tex]\sqrt[]{(x-9)^2}=\sqrt[]{144}[/tex][tex]x-9=\pm12[/tex][tex]x=12+9=21[/tex][tex]x=-12+9=-3[/tex]

x=-3

x=21

Answer Link

Otras preguntas

Which phrase best completes the dialogue? —¿Qué haces _____? —Yo voy al cine. A. los fines de semana B. va de compras C. ir al cine D. tiempo libre
Find the value of k so that (-1,5) lies on kx - 4y -k=0
which lists all the integer solutions of the equation x = l21l ? A.21 only B.21 and -21 C.0 and 21 D.-21 only
help find which ones grade
A package of 2 paintbrushes is on sale for 2.40. How much will 3 packages cost
x-5≥ 9 need answer plsss
What Cherokee leader was against removal
Which of the following is NOT a type of conflict? A. The youths struggle of fears B. The fat soliders fight with a young girl. C. the army travels through the
the volume of liquid can be measured with? A. graduated cylinder B. pan balance C. scale D. metric ruler
I need help with the top part