simplify using the formula
1.) (a-3)(a+3)
2.) (3d+1)(3d-1)
3.) (3w+2)(3w-2)
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simplify using the formula
1.) (a-3)(a+3)
2.) (3d+1)(3d-1)
3.) (3w+2)(3w-2)
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Answer:
1. a²+3a-3a+9
a²+9
2.9d²-3d+3d-1
6d²-1
3.9w²-6w+6w-4
9w²-4