C
substitute a = - 1 into the expression
- (- 1) - 12(- 1)² = 1 - (12 × 1 ) = 1 - 12 = - 11 → C
3(a+b) and 3a+b: not equivalent
4(x+2y) and 8y+4x: equivalent
Answer:
Solutions: (-2. -6), (1, -2), (10, 3), (5, 3)
Step-by-step explanation:
The answer is -3 because -3+2=-1 then -1(4)=-4
