8x^2-128=0 it is a algebra 1 question it says to solve the equation

x = +2, -2

8x^2-128=0 it is a algebra 1 question it says to solve the equation

Tutors, please sign in to answer this question.

Mckinney, TX

x = +2, -2

Olney, MD

8x^{2} -128 = 0

8x^{2} = 128 [Add 128 to both sides of the equation]

x^{2} = 16 [Divide both sides by 8]

√x^{2} = √16 [Take the square root of both sides]

-----------

6x^{2} - 24 = 0

6x^{2} = 24 [Add 24 to both sides]

x^{2} = 4 [Divide both sides by 6]

Can you finish it from here?

Dr. Anthon S.

Best Results By Perfect Score SAT/ACT Tutor! Math, Physics and more!

New York, NY

5.0
(456 ratings)

Thomas D.

Aerospace Engineer tutoring in Math/Science

Great Neck, NY

5.0
(61 ratings)

Michael E.

H.S. Mathematics Tutor (Certified NJ Teacher)

Saddle Brook, NJ

5.0
(113 ratings)

- Algebra 2 3150
- Algebra 4547
- Math 8586
- Prealgebra 167
- Geometry 1707
- Algebra Help 938
- Algebra Word Problem 2300
- Math Help 4842
- Word Problem 4721
- Precalculus 1416