Simplify quantity 6 x plus 9 over 15 x squared all over quantity 16 x minus 12 over 10 x to the fourth power. a)quantity 2 x plus 3 over 2 open parentheses 4 x minus 3 close parentheses b) x squared open parentheses 2 x plus 3 close parentheses over 2 open parentheses 4 x minus 3 close parentheses c) 2 open parentheses 4 x minus 3 close parentheses over x squared open parentheses 2x plus 3 close parentheses d) 8 x squared open parentheses 4 x minus 3 close parentheses over 9 open parentheses 2 x plus 3 close parentheses