1. Remove parentheses
-3x^2 + x^4 + x + 2x^4 - 7 + 4x
2. Collect like terms
-3x^2 + (x^4 + 2x^4) + (x + 4x) - 7
3. Simplify
-3x^2 + 3x^4 + 5x - 7
7/5y. you add the 2/5y to the 5/5y and get 7/5y
Answer:

Step-by-step explanation:
The quantity x + 7 is squared.

Expand the brackets and simplify the expression.




We can leave the expression in factored form.
the answer would be 336 because when you multiply 7x5x9.6 then you you get the total of 336.