Question

plz solve my question using identity
5.43 X 5.43 -1.57 X 1.57/3.86
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Answer 1

Answer:

Step-by-step explanation:

{(5.43)^2-(1.57)^2}/3.86

{(5.43+1.57)(5.43-1.57)}/3.86

{(7)(3.86)}/3.86

27.02/3.86

7