The two pairs are Pythagorean triples because if you plug the two legs of a right triangle into the Pythagorean theorem(A^2+B^2=C^2), then you will find the measurement for the third side(hypotenuse). i.e. 15^2+12^2=9^2(it's the Pythagorean triple 3,4,5 multiplied by 3). This works with any triple, as long as your using the legs of the triangle and as long as the triangle is a right triangle.
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i dont eather i need to know the ?
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b. -6
Step-by-step explanation:
I recommend using a calculator. symbolab calculator is a really good one. it tells you how to solve and gives the answer.
Well you could use the division sign