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

36 is what percent less than 48?

a jar contains 133 pennies. a bigger jar contains 1 2/7 times as many pennies. what is the value of the pennies in the bigger jar?

How to draw a smiley face on the graph using the Y= button on a graphing calculator

Who was John Howe ( American revolutionary war) and why did he matter to our history?

How to start a sentence off when describing someone?

is 2 squared between 1.4 and 1.5

How do you multiply mixed numbers and fractions?

Do chickens have a backbone

Why is compromise an important part of democracy?

EDIE WANTED TO SUBTRACT 273-188. SHE BEGAN BY FINDING 2-1. WHAT DID EDIE DO WRONG.