1.196(a-b)*-196(a+b)*2.(a+b+c)*-(a+b-c)*3.(2p+3q)*-(3p-q)/4.(x*+y*)*-x*y**=二次方/=三次方1.196(a-b)^2-196(a+b)^22.(a+b+c)^2-(a+b-c)^23.(2p+3q)^2-(3p-q)^24.(x^2+y^2)*-x^2y^2运用公式法,因式分解

Question

1.196(a-b)*-196(a+b)*
2.(a+b+c)*-(a+b-c)*
3.(2p+3q)*-(3p-q)/
4.(x*+y*)*-x*y*
*=二次方 /=三次方
1.196(a-b) ^2-196(a+b) ^2
2.(a+b+c) ^2-(a+b-c) ^2
3.(2p+3q) ^2-(3p-q) ^2
4.(x^2+y^2)*-x^2y^2
运用公式法,因式分解

Answer 1

1.196(a-b)*-196(a+b)*
=196[(a-b)*-(a+b)*]
=196(a*-2ab+b*-a*-2ab-b*)
=196(-4ab)
=-784ab
2.(a+b+c)*-(a+b-c)*
=(a+b)*+2(a+b)c+c*-(a+b)*+2(a+b)c-c*
=4(a+b)c
=4ac+4bc
3.(2p+3q)*-(3p-q)/
=4p*+6pq+9q*-(27p^3-27p*q+9pq*-q^3)
=
抱歉,没时间做了剩下的应该会了吧
4.(x*+y*)*-x*y*
=x^4+2x*y*+y^4-x*y*
=x^4+x*y*+y^4