miyonethesinger miyonethesinger

02-03-2020
Mathematics

contestada

Solve this quadratic equation by completing the square.
x2 + 6x = 18

Respuesta :

Аноним Аноним

02-03-2020

Answer:

x=3sqrt3-3; x=-3sqrt3-3

Step-by-step explanation:

solve for a, 2ax=6x; a=3:

x^2+6x+3^2=18+3^2

Simplify, 18+3^2=27:

x^2+6x+3^2=27

Complete square: (x+3)^2=27

Two answers: x+3=sqrt27; x+3=-sqrt27

Therefore, x=3sqrt3-3; x=-3sqrt3-3

Answer Link

Otras preguntas

asap!! someone please help! i don't understand how graphing functions work

A reason for the economic success of the southern colonies

_____ are considered to be the most important element in a computer-based information system.

write the ratio 6ft to 4 yd as a fraction in simplest form

What command would you issue from the command prompt to test whether your computer has connectivity to the network?

Which plot description is the best example of a tragedy? A. An old man must give up his most prized possession his car to raise enough money to send his gr

The bases on a baseball diamond are 90 feet apart. how far is it from home plate to second base?

How did the Allies use Island Hopping as a Strategy in the pacific?

In 2006 estimated economic cost of alcohol-related crashes in the u.s. was around

You are given two fat-like solid substances and upon analysis you determine that sample a has a higher melting point than sample b. you thus come to the conclus