Question

find the square of 78 by using column method​

Answer 1

Answer:

78²

a=7

b=8

a2+15

49+15

64

2*a*b

2*7*8

112

2

b²

8²

64

4

so

6084

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Answer 2

Answer:

6084

Step-by-step explanation:

a2 = 49

b2 = 64

2*a*b = 112

=> 6084