Asked by Robo
Solve by factoring.
2x^4 + x^2 = 1
2x^4 + x^2 = 1
Answers
Answered by
Rebecca
Follow these steps:
1.Move all terms to one side of the equation, usually the left, using addition or subtraction.
2.Factor the equation completely.
3.Set each factor equal to zero, and solve.
4.List each solution from Step 3 as a solution to the original equation.
1.Move all terms to one side of the equation, usually the left, using addition or subtraction.
2.Factor the equation completely.
3.Set each factor equal to zero, and solve.
4.List each solution from Step 3 as a solution to the original equation.
Answered by
Robo
I understand that. Problem is that I am not getting the same answer as the book.
Sqrt 2/2 and - sqrt 2/2
Sqrt 2/2 and - sqrt 2/2
Answered by
Mike
x= } 1/ã2
Answered by
MathMate
Substitute y=x²
2y²+y-1=0
Solve to get
y=-1 or y=1/2
if x²=-1, x=±i
if x²=1/2, x=±(1/2)=±(√2)/2
2y²+y-1=0
Solve to get
y=-1 or y=1/2
if x²=-1, x=±i
if x²=1/2, x=±(1/2)=±(√2)/2
Answered by
MathMate
if x²=1/2, x=±√(1/2)=±(√2)/2
Answered by
algebra
Thanks! got it.
Answered by
MathMate
You're welcome!
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