1.（a2-b2）2+3(a2-b2)-182.a2+2ab+b2-a-b3.(m2+3m)2-8(m2+3m)-204.4x2y2-4xy+11.（a°-b°）2+3(a°-b°）-182.a°+2ab+b°-a-b3.(m°+3m)°-8(m°+3m)-204.4x°y°-4xy+1上面打错，°是平方的意思~

Question

1.（a2-b2）2+3(a2-b2)-18
2.a2+2ab+b2-a-b
3.(m2+3m)2-8(m2+3m)-20
4.4x2y2-4xy+1
1.（a°-b°）2+3(a°-b°）-18
2.a°+2ab+b°-a-b
3.(m°+3m)°-8(m°+3m)-20
4.4x°y°-4xy+1
上面打错，°是平方的意思~

Answer 1

1.（a2-b2）2+3(a2-b2)-18
=（a^2-b^2+6)(a^2-b^2-3)
2.a2+2ab+b2-a-b
=(a+b)^2-(a+b)
=(a+b)(a+b-1)
3.(m2+3m)2-8(m2+3m)-20
=(m^2+3m-10)(m^+3m+2)
=(m+5)(m-2)(m+2)(m+1)
4.4x2y2-4xy+1
=(2xy-1)^2