Question 327388: Please help solve the following equation using Quadratic Form (NOT formula): Found 2 solutions by stanbon, Earlsdon:Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! 2x^4-10x^2=-8
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2x^4 - 10x^2 + 8 = 0
x^4 - 5x^2 + 4 = 0
Factor:
(x^2-4)(x^2-1) = 0
(x-2)(x+2)(x-1)(x+1)= 0
x = 2 or -2 or 1 or -1
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Cheers,
Stan H.
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You can put this solution on YOUR website! Temporarily substitute so now you have: Add 8 to both sides. So now you have a quadratic equation in y. Factor a 2. so... This will factor nicely into... and from the zero product rule you get... or therefore... or Re-substtute or Taking the square root of both of these, we get... or or or
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