What is the domain of x^3+3x^2-4x=0

Leo has b boxes of pencils. each box contains 6 pencils. he has a total of 42 pencils. the equation that represents this situation the value of b that makes the equation true the first one is b+6=42,6b=42,b=42+6,or 42b=6 the second one are 7,836 48

Valentina is subtracting from . she finds the lcd to be 15y2. what is valentina's next step?

Solve the triangle. a = 21°, c = 105°, c = 5