Polynomials

Question

Simplify the each expression (5h^4-7h^2-9)+(2h^4+4-3h) 

Answer 1

(5h⁴ - 7h² - 9) + (2h⁴ + 4 - 3h) = ?

Combine like terms, and note the order of terms in the second parenthesis is not standard, as written. (Was this intentional, or is it a typo?)

(5h⁴ - 7h² - 9) + (2h⁴ + 4 - 3h) = (5 + 2)h⁴ - 7h² - 3h + (-9 + 4) = 7h⁴ - 7h² -3h - 5