College Algebra
posted by Ulises .
x^35x^2+4x20 > 0 interval notation

factor by grouping
x^2(x5) + 4(x5) > 0
(x5)(x^2+ 4) > 0
x^2 + 4 is always positive, so for the whole thing to be positive
x5 > 0
x > 5
express it in the form you were taught.
Respond to this Question
Similar Questions

algebra
i forgot to post these! f(x)=9x+4 and listed in interval notation also: f(x) x2+14x+40 in interval notation and: 1/x^2+81 (interval notation) and: x+11/x^2121 (interval notation) and: f(x+2) f(x)=6x^2x+7 You have listed a lot of … 
Algebra
Solve and express in interval notation Solve: 5 – 8x > 11 and write interval notation for the solution set. This is what I get but I need it in interval notation. x<3/4 or x >2 Solve: (x3)/(x^225)<0 and write interval … 
Math Help Please
Please show me how to put this in interval notation. Thanks! I know I solved this right, I think, but need to put it in interval notatioin. Please tell me if i am correct. Thanks! PleaseSolve: (x3)/(x^225)<0 and write solution … 
College algebra
use interval notation to express the solution set of the inequality 2x + 3> or equal to 9 
college algebra
solve the following inequality. write the answer in interval notation x^34x^221x<0 please show work so i can understand this problem better! thanks 
College Algebra 1
What is the interval notation for 4(x+9)^3(x11)^4(x+6)>0 
Algebra
Find the domain of the function. (Write your answer using interval notation.) sqrt(x)/ (4x^2 + 3x − 1) If you set the bottom equal to zero, I got that x can't be 1 or 1/4. But I'm not sure if that's right, or how to write the … 
AlgebraInterval Notation
I don't remember how to solve this. The question is: For what values of a is the expression 7(x2)5 negative? 
PreCal: Domain
[Note: I really need help on these Domain questions. I've been struggling with this all day] Consider the following: f(x)= 5/x , g(x)= 7/(x+7) Find the solutions to the following: 1). (f+g)(x) 2). Domain of (f+g)(x) [Use interval … 
Algebra
Can you explain to me what is a set notation, interval notation, and inequality notation?