Which row operation will triangularize this matrix? 1 0 1 | 1 0 1 1 | 6 2 0 1 | 1 a) r1-r3 b)2r2-r3 c)-2r1+r3 d)2r1+r3 e)3r1+r3

Find and simplify an expression for the area of five rows of x squares with side lengths of x centimeters .

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a