Question

what is the solution with full method (196)^2

Answer 1

Answer:

${196}^{2} = 196 \times 196 = 38416 \\ {196}^{2} = {(200 - 4)}^{2} \\ {200}^{2} + {4}^{2} - 2 \times 200 \times 4 \\ 40000 + 16 - 1600 \\ 40000 - 1600 + 16 \\ 38400 + 16 = 38416$

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