Use algebra to find the domain of the function,
f(x) = x + 4

Sketch one cycle if the cosine function y=2cos2theta

Can someone check if i did this right since i really want to make sure it’s correct. if you do you so much

Factor the polynomial 4x4 – 20x2 – 3x2 + 15 by grouping. what is the resulting expression? (4x2 + 3)(x2 – 5) (4x2 – 3)(x2 – 5) (4x2 – 5)(x2 + 3) (4x2 + 5)(x2 – 3)