/解答(x+Y)(x+Y-1)-12=0求X+Y
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/解答(x+Y)(x+Y-1)-12=0求X+Y/解答(x+Y)(x+Y-1)-12=0求X+Y /解答(x+Y)(x+Y-1)-12=0求X+Y把X+Y看成XX(X-1)-12=0X=4X
/解答(x+Y)(x+Y-1)-12=0求X+Y
/解答(x+Y)(x+Y-1)-12=0求X+Y
/解答(x+Y)(x+Y-1)-12=0求X+Y
把X+Y看成XX(X-1)-12=0X=4X+Y=4
/解答(x+Y)(x+Y-1)-12=0求X+Y
X=0,y=2.x=1,y=-2.x=2,y=-2.请解答(x-y)的2次平方和(x+y)+(x-y) 并且说 以上获得什么规律?请解答(x-y)的2次平方 (x+y)+(x-y)
请解答方程组:(39)2x+y=5 (40)x+y=7 (41)2x+3y=12 (42)2x+y=3ax+3y=7 2x-y=8 3x+4y=17 3x-5y=11(43)3x+y=82 (44)3(x-1)=y+5 45 x/4+y/3=7 (46)x+y/3 +x-y/2=610x-11y=87 5(y-1)=3(x+5) 2/3x+y/2=14 3(x+y-)2(x-y)=28
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(X+Y)(X+Y-1)-12=0求X+Y=?
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