-9^2-(-6)^2+3-20 i don’t understand the question

28

-9^2 - (-6)^2 + 3 - 20

so follow order of operations

P = parentheses

E = exponents

D = divide

M = multiply

A = add

S = subtract

since there are no parentheses, do exponents

-9^2 = 81

-6^2 = 36

so now its

81 - 36 + 3 - 20

now follow order of operations

81 - 36 = 45

45 + 3 - 20

3 - 20 = -17

45 + -17 = 28

so your answer is 28  

1: -2 3/4, -2 1/2, -14, 0, 3, 8 1/3

2: -4, -3, -2 1/2, -2 1/4, 3 1/4,

step-by-step explanation:

30 units^2

step-by-step explanation:

area is l × w

the length is 3

and the width is 10

3 × 10= 30 units squared