Which shows the best use of the associative and commutative properties to make simplifying $ – 5+9 – į + 2 easier?
O A. (+(-5)] + [9+(-)+2
OB. 2+1–5)] + [(- $)+9
O c. (+()] + [9 +2+(-5)]
OD. [ +9+(-5)] + [2+(-)]
SUBMIT

What aspects of lines have to be diffrent

Which sum or difference identity would you use to verify that cos (180° - ∅) = -cos ∅? a. sin (α -β) = sin α cos β – cos α sin β b. cos (α -β) = cos α cos β – sin α sin β c. cos (α -β) = cos α cos β + sin α sin β d. sin (α + β) = sin α cos β + cos α sin β

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros. 3, 4+2i, 1+(sqrt)7 the answer is supposed to be: f(x)=x(^5)-13x(^4)+60x(^3)-82x(^2)-144x+360 what am i doing wrong?