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goldfiish [28.3K]
3 years ago
14

What is the result when 9 x 3 + 18 x 2 + 23 x + 30 9x 3 +18x 2 +23x+30 is divided by 3 x + 5 3x+5?

Mathematics
1 answer:
rusak2 [61]3 years ago
4 0

Answer:

There is no remainder. This means (3x+5) is a factor.

Step-by-step explanation:

We divide (3x+5) into the polynomial 9x^3+18x^2+23x+30 through long division or synthetic. We choose long division and look for what will multiply with (3x+5) to make the polynomial 9x^3+18x^2+23x+30 .

(3x+5)(3x^2)=9x^3+15x^2

We subtract this from the original 9x^3-(9x^3)+18x^2-(15x^2)+23x+30.

This leaves 3x^2+23x+30. We repeat the step above.

(3x+5)(x)=-3x^2+5x.

We subtract this from 3x^2-(-3x^2)+23x-(5x)+30=18x+30. We repeat the step above.

(3x+5)(6)=18x+30.

We subtract this from 18x-18x+30-30=0. There is no remainder. This means (3x+5) is a factor.



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