Posted by Henry on Wednesday, September 1, 2010 at 8:32am.
Solve:
1.) 2x² + 24 = x²
The answers I obtained were:
x = i√24 and x= i√24 are these correct?
2.) 9x³ = 25x
3.) 5x²  x = 7x²  5x  2
4.) 2x² = x³ + 4x  8
~Thank you

Math  Reiny, Wednesday, September 1, 2010 at 9:49am
1. correct, I would change √24 to 2√6
2. 9x^3  25x = 0
x(9x^2  25) = 0
x(3x+5)(3x5) = 0
x = 0, ±5/3
3. simplify to x^2  2x 1 = 0
then use the quadratic formula
4. x^3  2x^2 + 4x  8 = 0
x^2(x2) + 4(x2) = 0
(x2)(x^2+4) = 0
x = 2 or x = ±2i
Answer This Question
Related Questions
 Algebra  1. Simplify the expression: 4√18+5√32 A.45√2 B.32&#...
 8th grade algebra  Can you check my answers? 1. 3√20/√4 = 3√(...
 Math  Find an equation of the line that bisects the obtuse angles formed by the...
 maths  I will be thankfull to you if you help me to solve the below problem: 6...
 math  How would I come about to the solution and what the answers to the ...
 Algebra  How would i complete these problems? 1. (√6mn)^5 2. ^3√16x...
 Math  Help with radicals please  Please show work Simplify rational 1. 4√...
 Algebra  Simplify the expressions and solve the equations 1. 2√3  √...
 Algebra  1.Simplify the radical expression. √5+6√√5 A.5√...
 Math "Need Help Asap"!  Please Help Me !!!!!! 1. Polynomials Add or subtract (...
More Related Questions