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First off you need to know the order of operations to answer this correctly, PEMDAS ( parenthesis, exponent, multiply, divide, add, and subtract) which tells you the order to do operations within a problem, 2^2 = 4, and 7^2 = 49, 4 x 3 = 12, 12 x 5 = 60, 60 x 49 = 2,940 which is the answer

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13y ago

What else can I help you with?