(1)x²-5x+6=( )( );(2)x²+5x+6=( )( ); (3)x²+5x-6=( )( );(4)x²-5x-6=( )( ).分解因式:(p²+q²)²-4p²q²=_____是用初一的因式分解来解,
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![(1)x²-5x+6=( )( );(2)x²+5x+6=( )( ); (3)x²+5x-6=( )( );(4)x²-5x-6=( )( ).分解因式:(p²+q²)²-4p²q²=_____是用初一的因式分解来解,](/uploads/image/z/994023-63-3.jpg?t=%281%29x%26%23178%3B-5x%2B6%3D%28+%29%28+%29%3B%282%29x%26%23178%3B%2B5x%2B6%3D%28+%29%28+%29%3B+%283%29x%26%23178%3B%2B5x-6%3D%28+%29%28+%29%3B%284%29x%26%23178%3B-5x-6%3D%28+%29%28+%29.%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9A%EF%BC%88p%26%23178%3B%2Bq%26%23178%3B%29%26%23178%3B-4p%26%23178%3Bq%26%23178%3B%3D_____%E6%98%AF%E7%94%A8%E5%88%9D%E4%B8%80%E7%9A%84%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E6%9D%A5%E8%A7%A3%2C)
(1)x²-5x+6=( )( );(2)x²+5x+6=( )( ); (3)x²+5x-6=( )( );(4)x²-5x-6=( )( ).分解因式:(p²+q²)²-4p²q²=_____是用初一的因式分解来解,
(1)x²-5x+6=( )( );(2)x²+5x+6=( )( ); (3)x²+5x-6=( )( );(4)x²-5x-6=( )( ).
分解因式:(p²+q²)²-4p²q²=_____
是用初一的因式分解来解,
(1)x²-5x+6=( )( );(2)x²+5x+6=( )( ); (3)x²+5x-6=( )( );(4)x²-5x-6=( )( ).分解因式:(p²+q²)²-4p²q²=_____是用初一的因式分解来解,
1)(x-2)(x-3)
2)(x+2)(x+3)
3)(x-1)(x+6)
4)(x+1)(x-6)
十字相乘法,把6分解一下,分解之后正负取决如何于相加得到5