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How do you solve absolute value equations with x on both sides?
Wiki User
∙ 13y ago
Possible example:
2|x| = x2 - 8
For x>=0,
x2 - 2x - 8 = 0
(x-4)(x+2)=0
so x=4 (can't be -2 since x>=0)
For x<0,
x2 + 2x - 8 = 0
(x-2)(x+4)=0
so x=-4 (can't be 2 since x<0)
Wiki User
∙ 13y ago
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