use a diagram to show that (x + 3)(2x +4) is equivalent to 2x² + 10x + 12. Plz respond quick. Will mark brainliest

Find the zero function by factoring (try to show work) h(x)=-x^2-6x-9

Answer each of the questions for the following diagram: 1. what type of angles are these? 2. solve for x. what does x equal? 3. what is the measure of the angles?

Given sin28.4=.4756, cos28.4=.8796, and tan28.4=.5407 find the cos of 61.6