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

What is the area of a trapezoid with bases that are 7 meters and 10 meters in length and a height of 12 meters? 42 m2 60 m2 102 m2 204 m2
Draw a line segment of length 9.5cm.Construct a perpendicular bisector of AB
A 5-ounce container of Greek yogurt contains 135 calories. Find the unit rate of calories per ounce.
find the lcm of the following numbers by division method.198 and 352with process​
The cost of 1kg potatoes and 2kg tomatoes was 30 on a certain day. After two days the cost of 2kg potatoes and 4kg tomatoes was found to be 66. ​
write the expression 3a2b + 4ab2 as an equivalent algebraic expression​
Describe the properties of a rectangle
how did tropical Hagibis impact the environment
Examine four ways by which the individual can develop his/her responsibilities
Name all the chords. A. OR, OU, OT, TR B. TR C. UT,RU, SR, TS, TR D. UT, RU, SR, TS