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You are here: Experts > Science > Math for Kids > Basic Math > solve for X & solve inequality
Basic Math - solve for X & solve inequality
Expert: Lynn Houston - 10/21/2009
Question
solve for X.
3+1/x+1 = 4x/x-1
solve the inequality
2x²-x>6
Answer
solve for X.
3+1/(x+1) = 4x/(x-1) (multiply both sides by (x+1)(x-1)
(3+1)(x-1) = 4x(x+1) Multiply
3x + x - 3 - 1 = 4x^2 + 4x set = to 0
4x^2 + 4x -3x - x +4 = 0 combine like terms
4x^2 + 4 = 0
4(x^2 + 1) = 0
If I have the parentheses correct, then x = i^2 or i^-2
solve the inequality
2x²-x>6
2x²-x- 6 >0
(2x+3)(x-2)> 0
x < -3/2 or x>2
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