Question

find 'a' if the two polynomials​

Answer 1

Answer:

Step-by-step explanation:

gives same remainder when are divide by x+3

hence put x=-3...and equate equations

a( - 3) {}^{3}  + 3( - 3) {}^{2}  - 9 = 2( - 3) {}^{3}  + 4( - 3) + a \\  - 27a + 27 - 9 = -  54 - 12 + a \\  - 28a =  - 66 + 9 - 27 \\  - 28a =  - 66 - 18 \\ a = 3

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