Question

若3x³y-4x^m-2+6xy²-2為四次三項(xiàng)式，則該多項(xiàng)式的常數(shù)項(xiàng)為（　　）

A．-2

B．-4

C．-6

D．-8

Answer 1

分析：根據(jù)若3x³y-4x^m-2+6xy²-2為四次三項(xiàng)式，可得-4x^m-2是常數(shù)，可得常數(shù)項(xiàng)．

解答：解：∵若3x³y-4x^m-2+6xy²-2為四次三項(xiàng)式，
∴常數(shù)項(xiàng)為-4x^m-2-2=-6，
故選：C．

點(diǎn)評(píng)：本題考查了多項(xiàng)式，注意-4x^m-2-2是常數(shù)項(xiàng)．