(m+n)(p-q)-(m+n)(q+p)

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(m+n)(p-q)-(m+n)(q+p)(m+n)(p-q)-(m+n)(q+p)(m+n)(p-q)-(m+n)(q+p)(m+n)(p-q)-(m+n)(q+p)=(m+n)[(p-q)-(q+

(m+n)(p-q)-(m+n)(q+p)
(m+n)(p-q)-(m+n)(q+p)

(m+n)(p-q)-(m+n)(q+p)
(m+n)(p-q)-(m+n)(q+p)
=(m+n)[(p-q)-(q+p)]
=-2q(m+n)

5的2m+3n次方
=5的2m次方×5的3n次方
=(5的m次方)平方×(5的n次方)立方
=16×27
=4327(X+6)-3X=4(2X+5)
7X+42-3X=8X+20
8X-7X+3X=42-20
4X=22
X=22÷4
X=5.5