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LuckyWell [14K]
3 years ago
7

(b+3)(b^2-5b-5b-7) how to simplify

Mathematics
1 answer:
Marianna [84]3 years ago
8 0
(b + 3)(b² - 5b - 5b - 7)
(b + 3)(b² - 10b - 7)
(b³ - 10b² - 7b + 3b² - 10b - 7)
(b³ - 10b² + 3b² - 7b - 10b - 7)
b³ - 7b² - 17b - 7
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Help- ASAP please (25 points)
Alina [70]

Answer:

(t^2 -4) (t^2 +4)

(t-2)(t+2)(t^2+4)

Step-by-step explanation:

t^4 - 16

We can write this as the difference of squares

We know the dfference of squares is

(a^2 - b^2) = (a-b) (a+b)

( t^2 ^2 - 4^2) = (t^2 -4) (t^2 +4)

We can write t^2 -4 as the difference of squares

t^2 -4 = t^2 -2^2 = (t-2)(t+2)

Replacing this in

( t^2 ^2 - 4^2) = (t^2 -4) (t^2 +4) =  (t-2)(t+2)(t^2+4)

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