(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2
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(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2ab-b2)∴2ab/ab≤2ab/2√ab=√abm<0,n<0,求(√-m)2(√-n)2(X) =x2-2x + 2a(a2-2a
(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2
(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)
∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2
(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)∴2ab/a b≤2ab/2√ab=√ab m<0,n<0,求(√-m)2 (√-n)2
三向量AB、BC、CA构成ABC,AB BC CA=0(m 1)x2-mx m-1>0假设BE=BC CE=BC CA/2;CF=CA AF=CA AB/2假设三向量AB、BC、CA构成ABC,AB BC CA=0
因式分解x2-3x-(a2+a-2)
(X) =x2-2x + 2a(a2-2ab-b2)-b(2a2 ab-b2)loga[(x2^2-ax2)/(x1^2-ax1)]>0f(x)=x^5/5-ax^3/3 (a 3)x a^2
集合A={x|x2-ax+a2-19=0},B={x|x2-5x+6=0},C={x|x2+2x-8=0}.若集合A={x|x2-ax+a2-19=0},B={x|x2-5x+6=0},C={x|x2+2x-8=0}1)若A∩B=A∪B,求a的值
设关于x的不等式x2-(2a+1)x+a2+a-2>0和x2-(a2+a)x+a3
解方程:x2+ax-2a2=0.(a为已知常数)或(X+1)÷X2—2X2÷(X+1)=1解方程一:x2+ax-2a2=0.(a为已知常数)解方程二:(X+1)÷X2—2X2÷(X+1)=1
若不等式x2-(2a+1)x+a2+a
解不等式 X2+(1-a)X-2a2+a
解不等式 X2+(1-a)X-2a2+a
分解因式 x2-a2-2a-2x过程!
解不等式x2-2x-a2+2a<0
已知集合A={x|x2+2ax+(a2-4)
分解因式:x2+3ax-10a2-x+2a
已知不等式(a2-1)x2+2(a-1)x+1
因式分解:x2-9a2+12a-4;x2y+3xy2-x-3y;1-x2-2xy-y2;3a2+2b-2ab-3a;x2+y2+2xy+ax+ay;3x4-48y48a3-4a2-2a+1;x2-3xy-28y2;(x2-x)^2-4(x2-x)-12
设A={x|x2+4x=0},B={x2+(2a+1)x+a2-1=0},若A∩B =B,求a的值.
x3+(2a+1)X2+(a2+2a-1)x+a2-1因式分解
1/x+1/x(x-1)=,(a2-a)除于a2-2a+1/a-1=,x-1/x-2除于x2-2x+1/x2-4=,
14.下列各因式分解中正确的是( ) A.a4-9a2+8=(a2-1)(a2-8) B.(3x2+5x)2+(3x2+5x)-6=(3x2+5x