(2(-2)+9(5)-5)-(6(-2)-4(5)+2)
(-4+45-5)-(-12-20+2)
(45-9)-(-32+2)
36+30
66
The first one is finding the square root of things I believe and I'm not sure about the second one sorry
I think that's 2x but I'm not really sure.
I hope this helps.
By dividing the area of the polygon with the circles area.
He is not correct, any number 5 or greater rounds the number up.
The speed of the dragonfly would be 7 because 7 rounds 9 to 10 making 6 a 7.