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

Jerry rolls two six-sided number cubes. What is the probability that the sum of the two cubes will be greater than 10?

Which of these is a concave lens?

Cual es lafech de nacimiento de Jorge

how does a larger, more powerful country create an "us versus them" mentality with a smaller, less-powerful country?

Which of the following questions describes the equation m - 4 = 7? a.What number, when subtracted from four, results in seven? b.What number, when four is subt

if 50 is 20% of a value what is that value

After college start you start a job earning 38,000 a year. You get a 5% raise each year. A.) Write the first 3 terms of the sequence. B.) How much will you earn

Write a balanced equation for the dissolution of CaCO3? lable all phases too... So far I have CaCO3(aq)<-->Ca^2+(aq)+CO3^2-(aq) but that is wrong. Please

Solve for x: 2/5 (x - 2) = 4x. A. 2/9 B. 9 C. -2/9 D. -9/2

1/4 the difference of 4/6 + 3/12