Question

1. The value of (.89x89 - 79 79) is...
(a) 1680 (b) 1630 (c) 1860 (d) 1600​

Answer 1

Answer:

Option a

1680

hope it helps you!!!!

Answer 2

Answer:

Option (a) is the correct answer

Step-by-step explanation:

89^2-79^2

By using the identity:-

a^2-b^2 = (a+b)(a-b)

a=89 , b=79

(89+79)(89-79)

(168)(10)

=1680

I hope it helps,

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