(1+a)(1-a)=, 1+2a-a2, 1-a2, 1+a2, 1-2a+a2, (x+3)(x-3)=, x2+9, x2-9, x2-6x+9, x2+6x+9, (2a+5)(2a-5)=, 4a2-10a+25, 4a2+20a+25, 4a2-25, 4a2-20a+25, (2y-3z)(2y+3z)=, 4y2-12yz+9z2, 4y2+12yz+9z2, 4y2+9z2, 4y2-9z2, (10-x)(x+10)=, 100-x2, 100+x2, x2-100, x2+20x+100, (-7y+t)(t+7y)=, 49y2-t2, t2-14ty+49y2, t2+14ty+49y2, t2-49y2, (-y-2z)(-2z+y)=, -4z2-y2, 4z2-4yz+y2, 4z2-y2, y2+4yz+y2, (-4y-2z)(2z-4y)=, 16y2-4z2, 4z2-16y2, 16y2-16yz+4z2, 16y2+16yz+4z2, x4-y4=, (x2+y2)(x2+y2), (x2-y2)(x2+y2), (x2-y2)(x+y), (x+y)(x2+y2), (z-√3)(z+√3)=, z2-9, z2+3, z2+9, z2-3, (x2-4)=, (x-2)(x-2), (x+2)(x+2), (x-4)(x-4), (x-2)(x+2), 36a2-49, (6a+7)(6a+7), (6a-7)(6a+7), (7-6a)(7+6a), (7+6a)(7+6a), y2-5, (y-5)(y+5), (y-√5)(y-√5), (y+√5)(y+√5), (y+√5)(y-√5)
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اتحاد مزدوج - ریاضی نهم- الهام صحرایی دبیر ریاضی ناحیه 1 استان اردبیل
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