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22−12=332−12=852−22=21\begin{array} { l } 2 ^ { 2 } - 1 ^ { 2 } = 3 \\3 ^ { 2 } - 1 ^ { 2 } = 8 \\5 ^ { 2 } - 2 ^ { 2 } = 21\end{array}

Question 81

Multiple Choice

22−12=332−12=852−22=21\begin{array} { l } 2 ^ { 2 } - 1 ^ { 2 } = 3 \\3 ^ { 2 } - 1 ^ { 2 } = 8 \\5 ^ { 2 } - 2 ^ { 2 } = 21\end{array}


A) 82−52=398 ^ { 2 } - 5 ^ { 2 } = 39
B) 132−82=5513 ^ { 2 } - 8 ^ { 2 } = 55
C) 82−32=558 ^ { 2 } - 3 ^ { 2 } = 55
D) 82−22=608 ^ { 2 } - 2 ^ { 2 } = 60

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