Question

53² = (50+3)= 50²+3²+2×50×3 = 2500+9+300= 2809. using this find 42² and 103²​

Answer 1

Answer:

is equals to 50 square + 3 square + 2 X 50 x 3 + A + B whole square

Step-by-step explanation:

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Answer 2

Answer:

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