Answer:
500
Step-by-step explanation:
i want to help you but im not sure to my answer
x^2+20=2x move 2x to the left
x^2-2x+20=0
Quadratic formula =
x=1± i√19
40
<u>Answer:</u>
<u>Explanation:</u>
15 < 16+30
16 < 15+30
30 < 16+15