In a 45-45-90 right triangle, what is the ratio of the length of one leg to the length of the other leg?

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This is my question~~ ( r ^ 4 - 2r ^ 3 - 23 r ^ 2 - 4r - 32)÷(r+4) ~~ i must use long division to solve it : / i was wondering if anyone world like to solve it. and if so, share step-by-step explanations! you! ❤

Which one ? is the answer and how to find this answer