History, asked by doreami5469, 10 months ago

Without finding the square of number evaluate 86^2-85^2

Answers

Answered by ushakumari1021972
0

Answer:

the answer is 200500

I hope this will help y

Answered by deepti9911069244
4

Answer:

171

Explanation: (n + 1)^2  - (n)^2     =    2n + 1                    (n = 85)

                        (86)^2  -  (85)^2    =    2 * 85 + 1

                                                      =    170 + 1

                                                      =     171

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