(1)-(-y)^2(-y)^6(-x)^5(2)(-p)^5(-y)^6(-x)^5一：(1)-(-y)^2(-y)^6(-x)^5(2)(-p)^5(-y)^6(-x)^5二：把下列格式化成（x+y）^n或（x-y）^n(1)(x-y)^3(x-y)^2(y-x)

Question

(1) -(-y)^2(-y)^6(-x)^5 (2)(-p)^5(-y)^6(-x)^5
一：(1) -(-y)^2(-y)^6(-x)^5
(2)(-p)^5(-y)^6(-x)^5
二：把下列格式化成（x+y）^n或（x-y）^n
(1) (x-y)^3(x-y)^2(y-x)

Answer 1

(1) -(-y)^2(-y)^6(-x)^5
=x^5y^2y^6
=x^5y^8
(2)
(-p)^5(-y)^6(-x)^5
=-p^5(-x^5)y^6
=p^5x^5y^6
(3)
(x-y)^3(x-y)^2(y-x)
=-(x-y)(x-y)^2(x-y)^3
=-(x-y)^6
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