Monday

January 26, 2015

January 26, 2015

Posted by **Kelli** on Friday, January 4, 2013 at 7:55am.

x^3+x^2+64x+64>0

- math -
**priyanka**, Friday, January 4, 2013 at 8:24am332

- math -
**nina**, Friday, January 4, 2013 at 8:25amss33

- math -
**Reiny**, Friday, January 4, 2013 at 8:52amx^3+x^2+64x+64>0

x^2(x+1) + 64(x+1) > 0

(x+1)(x^2 + 64) > 0

since x^2 + 64 is always positive

we just have to look at

x+1 > 0

x > -1

see

http://www.wolframalpha.com/input/?i=x%5E3%2Bx%5E2%2B64x%2B64

notice the graph is > 0 (above the x-axis) for all values of x , x >-1

The first graph looks like a straight line, but it isn't.

the scaling distorts the graph.

**Answer this Question**

**Related Questions**

math - solve the polynomial inequality and graph the solution set on a real ...

math-please help,need quickly - solve the polynomial inequality and graph the ...

college algebra - 1. find the equation of the line with the given properties. ...

Solve the polynomial inequality - Solve the polynomial inequality and graph the ...

Math - Solve the polynomial equation and graphy it on a number line. Express the...

Algebra - Solve and express in interval notation Solve: |5 – 8x| > 11 and ...

Math: Polynomial inequalities - Show all work solve the Math: Polynomial ...

Math - Show all work solve the Polynomial inequality and express the solution ...

Algebra - please check my answers. thanxs! Solve the polynomial inequality and ...

Math - Show all work solve the Math: Polynomial inequality and express the ...