kobiquinn11
kobiquinn11 kobiquinn11
  • 21-05-2014
  • Mathematics
contestada

how do you solve 2x^2-32=0 using square roots? 

Please help!

Respuesta :

Lilith
Lilith Lilith
  • 21-05-2014
[tex]2x^2-32=0 \ \ / :2 \\ \\ x^2-16=0 \\ \\x^2-4^2 = 0 \\ \\ (x-4)(x+4)=0 \\ \\ x-4 = 0 \ \ or \ \ x+4 = 0\\ \\ x=4\ \ or \ \ x=-4[/tex]


Answer Link
kate200468
kate200468 kate200468
  • 21-05-2014
[tex]2x^2-32=0\\\\2(x^2-16)=0\ /:x^2-16=0\\\\x^2-4^2=0\\\\(x-4)(x+4)=0\\\\x-4=0\ \ \ \ or\ \ \ \ \ x+4=0\\\\x=4\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ x=-4[/tex]
Answer Link

Otras preguntas

Part A) Please solve this system of equations using the elimination method ONLY. 3x - 2t = 4 2x - 5 = -t Part B) Which number is the most convenient to multiply
Yeah... please help im kinda stuck
When a disaster happens, drone's can ___ damaged buildings. They can also carry __ to people who are hurt
(2) Joshua needed to put 5 cookies in each gift box. He had 16 chocolate chip cookies and 19 oatmeal cookies. How many boxes could he fill with cookies?​
A star is observed to have a temperature of 3000 k and a luminosity of 105. what is the color of the star? what group does the star belong to?
4. What type of assessments are based on repeatable, measurable data?
The last one d 16 is d.people in the local area
The radius of a circle is 2 yards. What is the circle's area? r=2 yd Use 3.14 for ​.
Question Find the value of y for the given value of x.y=x/3+5;x=6
Arrange the given polynomial in descending order. 3x+7x +1