Question

5. Using the formula for squaring a binomial, evaluate the following. (ii) (82)​

Answer 1

Answer:

Given (82)

2

But we can write 82 as 80+2

And also we know that (a+b)

2

=a

2

+2ab+b

2

By applying the above identity we get

(82)

2

=(80+2)

2

=80

2

+2(80)(2)+2

2

∴(82)

2

=6400+320+4=6724

Step-by-step explanation:

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