Nazanin1 Nazanin1

09-05-2016
Mathematics

contestada

Solve this quadratic equation by completing the square. x2 + 10x = 13

Respuesta :

apologiabiology apologiabiology

09-05-2016

take 1/2 of 10
10/2=5
square it
5^2=25

add to both sides
x^2+10x+25=13+25
factor perfec squaer
(x+5)^2=38
sqrt both sides
x+5=+/-√38
minus 5
x=-5+√38 or -5-√38

Answer Link

Otras preguntas

3/4 x 3/4 x 3/4 x 3/4 x 3/4

Cristiano is saving money to buy a bike that cost $189. He has saved $99 so far so far. He plans on saving $10 each week. In how many weeks will he have enough

Question 12 please thanks?

Oak door, rusty hinges and exterior mean in the scarlet letter

Which of the following is not true of Adolph Hitler? He supported the Treaty of Versailles. He wrote Mein Kampf. He was a militaristic expansionist. He was the

HURRY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Think about a girl on a swing. When is the kinetic

Which of the following is the correct definition of convection? A. the transfer of heat by currents B. the transmission of heat across matter C. the electromagn

Put the progress of early humans in the correct order of occurrence. 1. first discovered fertile valleys 2. second domesticated animals 3. third settled down

help please asap!!!!!!!!!

Which best explains how the Coriolis effect is related to wind direction? A. Air moves in a straight line from north to south. B. Wind is cooler at the po