Find the product of (a + b) (a2 - 3ab + 2b2) and verify the result for a= -1 and b= -2
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-9
Step-by-step explanation:
a=-1
b=-2
- -1+(-2)×[(-1×-1)-(3×-1×-2)+(2×-2×-2)]
- (-1-2)×[1-6+8]
- -3×[9-6]
- -3×3
- 9
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