Which function is an even function? A. f(x) = sin(-3πx)
B. f(x) = tan3πx
C. f(x) = cos(5π/4)(x)
D. f(x) = csc(-π/2)(x)

It is 5.8 you add all of the up to equat 180 then solve the equation

(m+11n)^2=(m+11n)(m+11n)=m^2+11mn+11mn+121n^2=m^2+22mn×121n^2 for example; use foil: (a+b)(a+b)first. a^2outside. abinside. ablast. b^2