大家好，我是小前，我来为大家解答以上问题。初三配方法解一元二次方程题及答案，一元二次方程题及答案很多人还不知道，现在让我们一起来看看吧！

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x^2-2x-80=0 答案：x1=-8 x2=10 (x+8)(x-10)  (4)x^2+10x-200=0 答案：x1=-20 x2=10 (x+20)(x-10) (5)x^2-20x+96=0 答案：x1=12 x2=8 (x-12)(x+8) (6)x^2+23x+76=0 答案：x1=-19 x2=-4 (x+19)(x+4) (7)x^2-25x+154=0 答案：x1=14 x2=11 (x-14)(x+1) (8)x^2-12x-108=0 答案：x1=-6 x2=18 (x-6)(X+18) (9)x^2+4x-252=0 答案：x1=14 x2=-18 (x+14)(x-18) (10)x^2-11x-102=0 答案：x1=17 x2=-6 (x-17)(x+6) (11)x^2+15x-54=0 答案：x1=-18 x2=3 (x+18)(x-3) (12)x^2+11x+18=0 答案：x1=-2 x2=-9 x+2 *x+9 (13)x^2-9x+20=0 答案：x1=4 x2=5 x-4 * x-5 (14)x^2+19x+90=0 答案：x1=-10 x2=-9 x+10 * x+9 (15)x^2-25x+156=0 答案：x1=13 x2=12 x-13 * x-12 23)x^2+5x-176=0 答案：x1=-16 x2=11 x+16* x-11 (24)x^2+28x+171=0 答案：x1=-9 x2=-19 x+9 * x+19 (25)x^2+14x+45=0 答案：x1=-9 x2=-5 x+9 * x+5 (26)x^2-9x-136=0 答案：x1=-8 x2=17 x+8 * x-17 27)x^2-15x-76=0 答案：x1=19 x2=-4 x+4 * x-19 28)x^2+23x+126=0 答案：x1=-9 x2=-14 x+9 * x+14 (29)x^2+9x-70=0 答案：x1=-14 x2=5 x+14 * x-5 (30)x^2-1x-56=0 答案：x1=8 x2=-7 x+8 * x-7 (31)x^2+7x-60=0 答案：x1=5 x2=-12 x+12 * x-5 (32)x^2+10x-39=0 答案：x1=-13 x2=3 x+13 * x-3 (。

本文到此讲解完毕了，希望对大家有帮助。