Set m contains the values {-12, -7, 4, 11} and set n contains the values {-3,2,8}. what is the greatest possible difference of m^2 - n^2 ?
a. 76
b. 117
c. 140
d. 153

C. 140

Step-by-step explanation:

We want m^2 to be the largest value it can be, so ignoring the sign of m the largest value of |m| is 12

(-12)^2 = 144 which is the largest value of m^2

We want n^2 to be the smallest it can be, so ignoring the sign of n the smallest value of |n| is 2

(2)^2 =4

m^2 -n^2

144-4 = 140

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