3 years ago

Which polynomial identity will prove that 65 = 81 - 16

Mathematics

1 answer:

steposvetlana [31]3 years ago

8 0

9^2 - 4^2 = (9 + 4)(9 - 4)
So the polynomial identity used here is
$(x + y)(x - y) = {x}^{2} - {y}^{2}$

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2 years ago

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PolarNik [594]

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Step-by-step explanation:

1. You can use the Heron's formula to calculate the area of the triangle, which is:

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2. Calculate $s$ :

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