Homework Help: Math-find roots

Posted by Sasha on Wednesday, May 30, 2012 at 6:24pm.

1.One root of each equation below is the same for both equations. what is this root?

a.3x^4 + 14x^3 + 8x^2=0
b.18x^4 - 50x^2=0

2. Find the other roots of each equation in question 1

Math-find roots - Reiny, Wednesday, May 30, 2012 at 7:07pm
a)
x^2(3x^2 + 14x + 8) = 0
x^2 (3x+2)(x+4) = 0
x = 0 , or x=-2/3, or x = -4

b)
2x^2(9x^2 - 25) = 0
2x^2(x+3)(x-3) = 0
x = 0 , x = 3, x = -3

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