(1)化简求值:2x^2+14x+24分之x^2+16+8x,其中x=-6当x=3,y=-2,求x^2-(y-1)^2分之x^2-y^2乘以x^2+2yx+y^2分之(x-y)^2-1除以x^2+xy-x分之x^2-xy的值、怎么做,
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![(1)化简求值:2x^2+14x+24分之x^2+16+8x,其中x=-6当x=3,y=-2,求x^2-(y-1)^2分之x^2-y^2乘以x^2+2yx+y^2分之(x-y)^2-1除以x^2+xy-x分之x^2-xy的值、怎么做,](/uploads/image/z/577867-67-7.jpg?t=%EF%BC%881%EF%BC%89%E5%8C%96%E7%AE%80%E6%B1%82%E5%80%BC%EF%BC%9A2x%5E2%2B14x%2B24%E5%88%86%E4%B9%8Bx%5E2%2B16%2B8x%2C%E5%85%B6%E4%B8%ADx%3D-6%E5%BD%93x%3D3%2Cy%3D-2%2C%E6%B1%82x%5E2-%28y-1%29%5E2%E5%88%86%E4%B9%8Bx%5E2-y%5E2%E4%B9%98%E4%BB%A5x%5E2%2B2yx%2By%5E2%E5%88%86%E4%B9%8B%EF%BC%88x-y%29%5E2-1%E9%99%A4%E4%BB%A5x%5E2%2Bxy-x%E5%88%86%E4%B9%8Bx%5E2-xy%E7%9A%84%E5%80%BC%E3%80%81%E6%80%8E%E4%B9%88%E5%81%9A%2C)
(1)化简求值:2x^2+14x+24分之x^2+16+8x,其中x=-6当x=3,y=-2,求x^2-(y-1)^2分之x^2-y^2乘以x^2+2yx+y^2分之(x-y)^2-1除以x^2+xy-x分之x^2-xy的值、怎么做,
(1)化简求值:2x^2+14x+24分之x^2+16+8x,其中x=-6
当x=3,y=-2,求x^2-(y-1)^2分之x^2-y^2乘以x^2+2yx+y^2分之(x-y)^2-1除以x^2+xy-x分之x^2-xy的值、怎么做,
(1)化简求值:2x^2+14x+24分之x^2+16+8x,其中x=-6当x=3,y=-2,求x^2-(y-1)^2分之x^2-y^2乘以x^2+2yx+y^2分之(x-y)^2-1除以x^2+xy-x分之x^2-xy的值、怎么做,
2x^2+14x+24分之x^2+16+8x,其中x=-6
=(x²+8x+16))/2(x²+7x+12)
=(x+4)²/2(x+3)(x+4)
=(x+4)/2(x+3)
=(-6+4)/2(-6+3)
=-2/(-6)
=1/3
当x=3,y=-2,求x^2-(y-1)^2分之x^2-y^2乘以x^2+2yx+y^2分之(x-y)^2-1除以x^2+xy-x分之x^2-xy的
=x²-(x²-y²)/(y-1)²*(x-y)²/(x²+2xy+y²)-1/(x²+xy)-(x²-xy)/x
这个题目看不懂
分子和分母分不清
2x^2+14x+24分之x^2+16+8x,其中x=-6
最后算出等于-189.5
x=-6
(x^2+16+8x)/(2x^2+14x+24)
=(x+4)^2/2(x+4)(x+3)
=(x+4)/2(x+3)
=(-6+4)/2(-6+3)
=1/3
x=3,y=-2
x^2=9,y^2=4,xy= -6,x+y=1,x-y=5
x^2-(x^2-y^2)/(y-1)^2*(x-y)^2/*(x+y)^2*(x^2+xy-x)/(x^2-xy)
=9-(9-4)/9*25/1*(9-6-3)/(9+6)
=9