SOLUTION: please help me : this is the question find the set of values of x which : 1) x^2-5x >0 2) 2x^2+3x<or equal to 0 Please help im completely stuck Thankyou

Question 233497: please help me : this is the question
find the set of values of x which :
1) x^2-5x >0
2) 2x^2+3x
Please help im completely stuck
Thankyou
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
find the set of values of x which :
1) x^2-5x >0
---
You do not directly solve inequlities.
You solve the boundary value which is the EQUALITY.
Solve x^2-5x = 0
x(x-5) = 0
x = 0 or x = 5
-------
Draw a number line and plot x=0 aand x = 5
-----
Now check a value from each of the resulting intervals
in x(x-5) >0 to see where the solutions of the INEQUALITY are.
-----
Checking x = -10 you get -*- > 0 ; true, so solutions in (-inf,0)
Checking x = 2 you get +*- >0 ; false, so no solutions in (0,5)
Checking x = 10 you get +*+ >0 ; true, so solutios in (5,+inf)
============================================================
Final answer: (-inf,0)U(5,+inf)
======================================

2) 2x^2+3x
This is not an equation or an inequality so has no solution.
================================================
Cheers,
Stan H.

RELATED QUESTIONS
Hello, can you please help me solve these two problems :) Find the solution set. Write (answered by stanbon)

Find the set of values of x for which the following inequality is true 2x-3/x-5<3/2, x... (answered by math-vortex)

can u please help me solve or simplify this equation? im going to list the possible... (answered by Alan3354)

Can you please help me with this question: If B Is not equal to 0, classify the graph of... (answered by rothauserc)

Please help me solve: find the values of t, with 0 is less than or equal to t which is... (answered by lwsshak3)

Help me please to solve this problem If {{{ x^2 - 5x - 1 = 0 }}}, what is the value of... (answered by josgarithmetic,robertb)

Please help me find the solution set of this quadratic inequality:{{{x^2> or equal to... (answered by ikleyn)

Good evening ma'am or sir I don't know how to get the values of x here in this equation... (answered by MathLover1)

Please help me to solve this equation the values of x satisfying the equation... (answered by Edwin McCravy)