Answer:
1) 9
2) 256
3) -32
4) -2744
Step-by-step explanation:
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7y - 4x
Given
- 3(2x - y) + 2y + 2(x + y) ← distribute both parenthesis
= - 6x + 3y + 2y + 2x + 2y ← collect like terms
= - 4x + 7y
= 7y - 4x