Answer:
x=20
Step-by-step explanation:
Answer:1. (5m + 3n) + (4m - 6n)
=9m - 3n ...combine like terns
answer is
B. 9m - 3n
2. Multiply: (x + 1)(x - 2)
=x^2 +x -2x - 2
=x^2 -x - 2
answer
D. x2 - x - 2 hopes this helps
