Urgent 1. what is the first operation used to evaluate 5+7*6-2/4? a. subtract 2 from 6 b. add 5 plus 7 c. multiply 7 times 6 d. divide 2 by 4 2. what is the first operation used to evaluate 3*4-(2+6)^2? multiply 3 times 4 subtract 2 from 4 add 2 plus 6 square 6 3. which gives the first two steps to evaluate 7+4/2-8*2? a. add 7 plus 4, subtract 8 from 2 b. add 7 plus 4, divide 11 by 2 c. divide 4 by 2, multiply 8 times 2 d. divide 4 by 2, add 7 plus 2 4. which gives the first two steps to evaluate 6-2(3+5)^2-4? a. add 3 plus 5, square 8 b. subtract 2 from 6, add 3 plus 5 c. square 3, square 5 d. add 3 plus 5, multiply 8 by 2