x + a)(x + 3)(2x+1) = bx^3 + cx^2 + dx -1(x + a)(x + 3)(2x+1) = bx^3 + cx^2 + dx -10. find values for a b c and d

1. whats 2/3 plus 1/9 2. 5/7 plus 1/2 3.7/15 plus 2/15

Which number is located at point a on the number line? a number line is shown from negative 10 to 10 with each interval mark on the number line representing one unit. point a is labeled one interval mark to the right of negative 5.

What is the probably of getting heads when poing a coin and getting a number greater than or equal to 5 when rolling a single diea) 1/6b) 1/3c) 1/4d) 1/12