macymonas macymonas
  • 04-05-2020
  • Mathematics
contestada

solve x²-10x-20=0 using completing the square

Respuesta :

amanda76542 amanda76542
  • 04-05-2020

Answer:x=5+-sq45

Step-by-step explanation:

X^2-10x-20=0

-10/2=-5^2=25

x^2-10x+25=20+25

(x-5)^2=45

sq(x-5)= x-5

x-5=+-sq45

x=5+-sq45

sq= squareroot symbol

Answer Link

Otras preguntas

in order to solve he following system of equations by subtraction, which of the following could you do before subtracting the equations so that one variable wil
A. 90 B. 105 C. 225 D. 315
kelly raised a number 2 to a power and then added 4 to the result. she obtained a sum of 68. to what power did she raise 2?​
PLEASE HELP ME!!! Find the vertex of f(x)=x^2+2x+3 and show your work
Which equality represents written in function notation?
This phrase most closely matches the philosophy of: A:democracy. B:mercantilism. C:capitalism. D:communism.
So far DUDE has run 6 laps during track practice. This is 60% of the number of laps that her coach told her to run. How many laps did the coach tell DUDE to run
How did the Mexican war influence Polk’s position in Oregon?
A cylinder. The distance between the center of one of the circular bases and its circumference is 11 inches. The vertical distance between the centers of the tw
Please help me with this please