问题
填空题
计算(-3a2+2b2)(3a2-2b2)=______.
答案
(-3a2+2b2)(3a2-2b2)
=-(3a2-2b2)(3a2-2b2)
=-(3a2-2b2)2
=-(9a4-12a2b2+4b4)
=-9a4+12a2b2-4b4.
故答案为-9a4+12a2b2-4b4.
计算(-3a2+2b2)(3a2-2b2)=______.
(-3a2+2b2)(3a2-2b2)
=-(3a2-2b2)(3a2-2b2)
=-(3a2-2b2)2
=-(9a4-12a2b2+4b4)
=-9a4+12a2b2-4b4.
故答案为-9a4+12a2b2-4b4.