(1)x²+7x+10 (2)x²-2x-8 (3)y²-7y+12 (4)x²+7x-18
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![(1)x²+7x+10 (2)x²-2x-8 (3)y²-7y+12 (4)x²+7x-18](/uploads/image/z/591767-71-7.jpg?t=%281%29x%26%23178%3B%EF%BC%8B7x%EF%BC%8B10+%282%29x%26%23178%3B%EF%BC%8D2x%EF%BC%8D8+%283%29y%26%23178%3B%EF%BC%8D7y%EF%BC%8B12+%284%29x%26%23178%3B%EF%BC%8B7x%EF%BC%8D18)
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(1)x²+7x+10 (2)x²-2x-8 (3)y²-7y+12 (4)x²+7x-18
(1)x²+7x+10 (2)x²-2x-8 (3)y²-7y+12 (4)x²+7x-18
(1)x²+7x+10 (2)x²-2x-8 (3)y²-7y+12 (4)x²+7x-18
(1)x²+7x+10=(x+2)(x+5)
(2)x²-2x-8 =(x-4)(x+2)
(3)y²-7y+12=(x-4)(x-3)
(4)x²+7x-18 =(x+9)(x-2)