I've learned law of cosines and law of sines so far, but idk how to do this. pls help, thank you!

Which shows one way to determine the factors of  x3  +  5x2  –  6x  –  30 by grouping? x(x2  –  5)  +  6(x2  –  5)x(x2  +  5)  –  6(x2  +  5)x2(x  –  5)  +  6(x  –  5)x2(x  +  5)  –  6(x  +  5)

Me find the value of x each figure.

At your job you're paid $50 per week plus $3 per sale at least how many saled do you need to make in order to have over $250