Using the formula for squaring a binomial, evaluate the (82)2.

1.	Using the formula for squaring a binomial, evaluate the (82)2.
Answer» Given (82)² But we can write 82 as 80+2 And also we know that (a + b)²= a²+2ab+b² By applying the above identity we get (82)²= (80+2)²= 80²+2(80) (2) +2² (80+2)²=6400+320+4=6724

Answer»

Given (82)²

But we can write 82 as 80+2

And also we know that (a + b)²= a²+2ab+b²

By applying the above identity we get

(82)²= (80+2)²= 80²+2(80) (2) +2²

(80+2)²=6400+320+4=6724

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