Math, asked by swayam2010, 10 months ago

2x+3 is factor of 2x^3+9x^2-x-b

Answers

Answered by Anonymous
4

Answer:

2x+3=0

x=-3/2

2x*3+9x*2-x-b

2*-3/2+9*-3/2*2-(-3)/2-b=0

-3+9-3-(-3)-b=0

3-6-b=0

-3-b=0

b=3

Hope it Will help u

pls mark my answer as brainliest pls

Answered by Anonymous
3

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2x + 3)2x {}^{3} + 9x {}^{2}  - x - b (x {}^{2} + 3x - 5 \\ \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  2x {}^{3}  + 3x {}^{2}  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: ------- \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 6 x {}^{2}  - x - b \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 6x {}^{2}  + 9x \: - 10x - b \\ ------ 10x - 15 \: \: \: \: \: \: \: \:  - - - - -  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 15 - b

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