Question

a三次方剩a的六次方除a的五次方等于多少？

（2x-1)(3x+2)

Answer 1

猜a^3*a^6÷a^5
=a^(3+6-5)
=a^4,
（2x-1)(3x+2)
=6x^2+4x-3x-2
=6x^2+x-2.

Answer 2

解:a^3ⅹa^6除a^5
=a^3a^5÷a^6
=a^(3+5一6)
=a^2。