2x^3+3x^2-x+a x^2+x-1 2x+1 2x^3+x^2 - - 2x^2-x+a 2x^2+x -2x+a -2x-1 - a+12x^3+3x^2-x+a x^2+x-1 2x+1 2x^3+x^2 - - 2x^2-x+a 2x^2+x -2x+a -2x-1 - a+1

Để \(A \left(\right. x \left.\right) B \left(\right. x \left.\right) \Leftrightarrow a + 1 = 0\)

                              \(\Leftrightarrow a = - 1\)

Để A(x) chia hết cho B(x) thì 

[(8x²-26x+a)-(2x-3)] chia hết cho 2x-3

=> [8x²-28x+a+3]chia hết cho 2x-3

ta có :

8x²-12x-16x+a+3=4x(2x-3)-16x+a+3

Để -16x+a+3 chia hết cho 2x-3 thì a+3=24 [để xuất hiện -8(2x-3)]

do đó a=21

465+354=819

580

855

ta có 36/45=4/5=20/25

20/25+4/25=24/25

2

rank j solo oneshot k

Ta có : \(y = 5 x - 1\)

\(\Rightarrow y = 5. \left(\right. - 5 \left.\right) - 1 = - 26\)

\(y = 5. \left(\right. - 4 \left.\right) - 1 = - 21\)

\(y = 5. \left(\right. - 3 \left.\right) - 1 = - 16\)

\(y = 5. \left(\right. - 2 \left.\right) - 1 = - 11\)

\(y = 5. \left(\right. 0 \left.\right) - 1 = - 1\)

\(y = 5. \left(\right. 15 \left.\right) - 1 = 74\)