Match each expression to its equivalent standard form. x² - 44 - 4
x² + 4
x²+x+2
x2 - 4x + 8
x² + 2x+21
x² + 16
(x+21)(x-21)
(x-2 +21)(x-2-21)
2
(x + 1 + (x + 1 - 1)

He mass of a single atom of carbon can be found by dividing the atomic mass (12.01 g) by 6.022 x 10^23. which is the mass of a single carbon atom, correctly written in scientific notation with the correct number of significant figures?

Plzzz answer both questions and i will give you 100 points

7+(3n++8) what is the answer to this?