集合A={x丨ax+b≠0},B={x丨cx+d≠0},U=R,则{x丨(ax+b)(cx+d)=0}等于 A(CRA)∩(CRB) B(CRA)∪(CRB)

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集合A={x丨ax+b≠0},B={x丨cx+d≠0},U=R,则{x丨(ax+b)(cx+d)=0}等于A(CRA)∩(CRB)B(CRA)∪(CRB)集合A={x丨ax+b≠0},B={x丨cx+

集合A={x丨ax+b≠0},B={x丨cx+d≠0},U=R,则{x丨(ax+b)(cx+d)=0}等于 A(CRA)∩(CRB) B(CRA)∪(CRB)
集合A={x丨ax+b≠0},B={x丨cx+d≠0},U=R,则{x丨(ax+b)(cx+d)=0}等于 A(CRA)∩(CRB) B(CRA)∪(CRB)

集合A={x丨ax+b≠0},B={x丨cx+d≠0},U=R,则{x丨(ax+b)(cx+d)=0}等于 A(CRA)∩(CRB) B(CRA)∪(CRB)
选B(CRA)∪(CRB)
{x丨(ax+b)(cx+d)=0}表示(ax+b)(cx+d)有一个为0即可