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PSYCHO15rus [73]
3 years ago
12

Help please !!! Thanks guys

Mathematics
1 answer:
natka813 [3]3 years ago
3 0
Answer:
(b+4) and (b-1)
Explanation:
do a generic rectangle
b times b is b^2
b times 4 = 4b
-1 times b = -1b
-1 times 4 = -4
b^2+4b-1b-4
simplify
b^2+3b-4
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