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Aleks [24]
3 years ago
10

Simplify expression -9b-4+4+9b

Mathematics
2 answers:
erik [133]3 years ago
5 0

Answer:

0

Explanation:

−9b − 4 + 4 + 9b

= −9b + −4 + 4 + 9b

Combine Like Terms

= −9b + −4 + 4 + 9b

= (−9b + 9b) + (−4 + 4)

= 0

Rasek [7]3 years ago
3 0
B=0 because everything cancels out
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3 years ago
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o-na [289]

Answer:

Option B 3,-3,-6 is correct.

Step-by-step explanation:

We need to find real zeroes of x^3+6x^2-9x-54

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x^3+6x^2-9x-54\\=(x^3+6x^2)+(-9x-54)

Taking x^2 common from first 2 terms and -9 from last two terms we get

=(x^3+6x^2)+(-9x-54)\\=x^2(x+6)-9(x+6)\\

Taking (x+6) common

(x+6)(x^2-9)\\

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Putting it equal to zero,

(x+6)(x+3)(x-3) =0\\x+6 =0, x+3=0\,\, and\,\, x-3=0\\x=-6, x=-3\,\, and\,\,  x=3

So, Option B 3,-3,-6 is correct.

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