若1∈{a+2,(a+1)2,a2+3a+3},则实数a=______.
已知集合A={a+2,(a+1)2,a2+3a+3},若1∈A,则实数a的值为______.
若实数a满足a2-2a-1=0,则3a2-6a+5=______.
若实数a满足a2-2a+1=0,则2a2-4a+5=______.
若实数a满足a2-2a=3,则3a2-6a-8的值为______.
已知全集U={2,3,a2-a-1 },A={2,3},若CUA={1},则实数a的值是______.
设集合A={-1,1,3},B={a+2,a2+4},A∩B={3},则实数a=______.
已知集合A={a2,a+1,-3} B={a-3,2a-1,a2+1},若A∩B={-3},则实数a=_________
已知实数a满足a2+2a-1=0求(1 /a+1)-(a+3/a2-1)*(a2-2a+1/a2+4a+3)的值
如果实数a,b满足条件a2+b2=1,|1-2a+b|+2a+1=b2-a2,则a+b=______.
已知集合A={2,3,2a+1},B={a2+a-4,a2+1,-2},且A交集B={2},则实数a=( )
已知实数a满足a2+2a-8=0,则1a+1−a+3a
若a2+2a=1,则2a2+4a-1=______.