Luco edition junior high school mathematics synchronous exercise problem seventh grade second volume answer
5 、( 1)x？ -5x+6=(x-2)(x-3)
(2)x？ +5x+6=(x+2)(x+3)
(3)x？ +5x-6=(x- 1)(x+6)
(4)x？ -5x-6=(x+ 1)(x-6)
6. Decomposition factor: (P? +q？ )? -4p？ q？ =(p？ -q？ )?