Question

find the square of each of the following numbers without actual multiplication. 39​

Answer 1

Answer:

39^2 = (30 + 9)^2 = 30(30 + 9) + 9(30 + 9)

= 30^2 + 30 * 9 + 9 * 30 + 9^2

= 900 + 270 + 270 +81

= 1521

Step-by-step explanation:

Answer 2

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