# algebra

posted by .

solve
(x+16)*(x-19)*(x+3)>0
The soltion set is{x| }
I do not understand this one.

• algebra -

The (x+16)*(x-19)*(x+3) function is zero at x = -16, -3 and 19.

It is >0 if x>19 and also if -16>x>-3

check:
for x = -10, 6 x(-29)x(-7) = +1218
for x=20, 36*1*23 = +828

Somehow you put that into "solution set" language.

## Similar Questions

1. ### Math help!

I don't understand this. Solve -5x - 6 = -6x^2 Rearrange to 6x^2-5x-6=0 (3x + 2)(2x - 3)= 0 Set each factor equal to zero and solve for x. I hope this helps.
2. ### Math

I just don't understand this question: h(t)=A*b^x h(3)=4 h(5)=40 Solve for b Would you plug 3 into the x and set it equal to 4?
3. ### algebra

How do I solve this problem? (4x + 2)(x-3)=0 Set 4x+2 = 0 and solve for x. set x-3 = 0 and solve for x. You will have two answers for x.
4. ### Math

I don't understand this!!! If rstv=1 and stuv=0, which of the followin must be true?
5. ### Algebra II

I need some help with some problems as well as need some checked. Could you please help me?

Solve the equation by expressing each side as a power of the same base and then equating exponents. 9^(x - 9)/8= sqrt of 9 i got 13 4^(x + 10) = 8^(x - 6) i got 38 Solve the exponential equation. Express the solution set in terms of …
7. ### Algebra

thank you so much i had it right. i need help with this one too. i don't understand it. solve. -7/2x=-9/4 the solution set is {x|x__ __} (Simplify your answer.Type an inequality symbol;they type an integer or a fraction.)
8. ### cal3/algebra help me!

Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xy I really need help answering this one!! Please answer in detail! Thank you This is what I have so far... D=FxxFyy-(Fxy)^2=(-6y)(-6x)-(-6x-6y+36)^2 …
9. ### Algebra

who ever will help me I do not understand this problem?
10. ### algebra

Solve the system graphically. If a system has an infinite number of solutions, use set-builder notation to write the solution set. If a system has no solution, state this. 2x – y = 4 5x – y = 13 I do not understand how to do this

More Similar Questions