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adoni [48]
2 years ago
11

Expand and simplify : A) (x+7)(x+10). B) (X-3) (X-9)

Mathematics
1 answer:
garri49 [273]2 years ago
6 0

Answer:

Step-by-step explanation:

A) Using the foil method and distribution, you should get x²+10x+7x+70 from (X×X)+(X×10)+(X×7)+(7×10). When you combine these like terms, you get x²+17x+70.

B) Using the same ideology from part A, when you multiply x-3 into x-9. you should get x²-9x-3x+27. Simplifying this will give you x²-12x+27.

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