一元二次方程 | 根 | 二次三项式 |
x2-25=0 | x1=5,x2=-5 | x2-25=(x-5)(x+5) |
x2+6x-16=0 | x1=2,x2=-8 | x2+6x-16=(x-2)(x+8) |
3x2-4x=0 | __ | 3x2-4x=3(x-__ )(x-__ ) |
5x2-4x-1=0 | x1=5,x2=- | 5x2-4x-1=5(x-1)(x+) |
2x2-3x+1=0 | __ | 2x2-3x+1=__ |
九年级数学解答题中等难度题
一元二次方程 | 根 | 二次三项式 |
x2-25=0 | x1=5,x2=-5 | x2-25=(x-5)(x+5) |
x2+6x-16=0 | x1=2,x2=-8 | x2+6x-16=(x-2)(x+8) |
3x2-4x=0 | __ | 3x2-4x=3(x-__ )(x-__ ) |
5x2-4x-1=0 | x1=5,x2=- | 5x2-4x-1=5(x-1)(x+) |
2x2-3x+1=0 | __ | 2x2-3x+1=__ |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x)(x+2) |
4x2+13x+3=0 | x1= ______,x2= ______ | 4x2+13x+3=4(x+ ______)(x+ ______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x-)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x+)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x-)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x+)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x-)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x+)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x-)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x+)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x-)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x+)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x-)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x+)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=______,x2=-1 | 3x2+x-2=3(x-______)(x+1) |
2x2+5x+2=0 | x1=______,x2=-2 | 2x2+5x+2=2(x+______)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析
一元二次方程 | 两个根 | 二次三项式因式分解 |
x2-2x+1=0 | x1=1,x2=1 | x2-2x+1=(x-1)(x-1) |
x2-3x+2=0 | x1=1,x2=2 | x2-3x+2=(x-1)(x-2) |
3x2+x-2=0 | x1=,x2=-1 | 3x2+x-2=3(x-)(x+1) |
2x2+5x+2=0 | x1=-,x2=-2 | 2x2+5x+2=2(x+)(x+2) |
4x2+13x+3=0 | x1=______,x2=______ | 4x2+13x+3=4(x+______)(x+______) |
九年级数学解答题中等难度题查看答案及解析