2x2-8x (two x squared minus 8 x)
You can do math in sports to calculate angles and other stuff
Answer:
The number 620,000,000 in scientific notation, would be:
× 
53 48 24 should be the answer but im not 100% sure
The answer would be - 4, since as negative numbers move away from zero, their value will get smaller and smaller as opposed to positive numbers which gets bigger and bigger as it moves away from zero.