English, asked by bbvahbahag, 11 months ago

Subtract the square of 42 from the square of 43 without actually calculating the squares. ​

Answers

Answered by GPBAG
3

Answer:

43^2-42^2

=(43+42)(43-42)

=85*1

=85

Explanation:

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Answered by Anonymous
1

Answer:

Given,

We need to Subtract the square of 42 from the square of 43 without actually calculating the squares.

Using the formula

 {x}^{2}  -  {y}^{2}  = (x + y)(x - y)

We get.....

 =  >  {(43)}^{2}  -  {(42)}^{2}  \\  =  > (43 + 42)(43 - 42) \\  =  > 85 \times 1 \\  =  > 85.

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