vulloa22
Find all solutions of the equation.
x^4 − 6x^2 + 5 = 0



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anonymous
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\[(x^25)(x^21)=0\] is a start

ParthKohli
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And almost the finish.

UsukiDoll
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true.

UsukiDoll
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hint: factor x^21

UsukiDoll
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dw:1359862100755:dw

UsukiDoll
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take each equation piece by piece...aww #(*&@*(# it only x^25 for piece by piece because I can see that x = 1 and 1

UsukiDoll
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dw:1359862148598:dw

UsukiDoll
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take the square root of 5

UsukiDoll
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dw:1359862186896:dw

UsukiDoll
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so the answers are x = 1, 1, and whatever the last drawing is

UsukiDoll
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oh wait we may need to test them ... well plug the x values back into the equation. I can see that 1 and 1 doesn't equal to 0

UsukiDoll
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3 does not equal to 0 if we plug x = 1 and 1 back into the equation

UsukiDoll
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what wait wait wait ackkk

UsukiDoll
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sorry I thought I saw a 4x^4 ok ok hold up

UsukiDoll
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so... retrying this if x = 1 and 1dw:1359862389372:dw

UsukiDoll
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there it does equal
sorry made a mistake bad eyes

UsukiDoll
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solutions are 1 1 squareroot(5) squareroot(5)

UsukiDoll
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really 7 people watching and only 1 doing? lol ?

UsukiDoll
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5 viewing and only me doing the problem...nice __