Factorize:
a) x²-6x-7
b) x²+4x-21
c) x²+16x+63
d) c²-6c+9

Find the power series expantion of f(z)=log(4=3z) at the point z=-1

What are the solutions of the equation? 16x^2 + 24x + 5 = 5 a. 1/4, 5/4 b. -1/4, -5/4 c. -1/4, 5/4 d. 1/4 , -5/4

Acircus act has 3 times as many elephants as acrobats. jorge noticed that all together there were 56 legs in the circus ring. how many elephants were in the show?