So 90^2+90^2=c^2
8100+8100=c^2
16200=c^2
C= ~127.28
The answer is 3.6 i know because i am a nerd
Add numbers with the same amount of variables
-x^2 + (-7x^2) = -8x^2
– 28x (+ 14x )= -14x
7 (+ 8) = 15
-18x² - 14x + 15 is your answer
hope this helps
Answer:
I'm pretty sure it is d, 5/22
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