perfect square trinomials
7. a²+2a+1
8. x²+18x+81
9. 49m²-56m+16
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perfect square trinomials
7. a²+2a+1
8. x²+18x+81
9. 49m²-56m+16
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Answer:
7.
8.
9.
Step-by-step explanation:
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