因式分解.不要做错了1.a(a+1)²+(5a+2)x+6 2.(2a²-a)x²+(2a-3)x-123.6x²+17xy+12y²4.x²-x-35.-2≤ -x²-2x+1 ≤16.ax÷(x-1)<2
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![因式分解.不要做错了1.a(a+1)²+(5a+2)x+6 2.(2a²-a)x²+(2a-3)x-123.6x²+17xy+12y²4.x²-x-35.-2≤ -x²-2x+1 ≤16.ax÷(x-1)<2](/uploads/image/z/800749-37-9.jpg?t=%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3.%E4%B8%8D%E8%A6%81%E5%81%9A%E9%94%99%E4%BA%861.a%EF%BC%88a%2B1%EF%BC%89%26%23178%3B%2B%EF%BC%885a%2B2%EF%BC%89x%2B6+2.%282a%26%23178%3B-a%29x%26%23178%3B%2B%282a-3%29x-123.6x%26%23178%3B%2B17xy%2B12y%26%23178%3B4.x%26%23178%3B-x-35.-2%E2%89%A4+-x%26%23178%3B-2x%2B1+%E2%89%A416.ax%C3%B7%EF%BC%88x-1%EF%BC%89%EF%BC%9C2)
因式分解.不要做错了1.a(a+1)²+(5a+2)x+6 2.(2a²-a)x²+(2a-3)x-123.6x²+17xy+12y²4.x²-x-35.-2≤ -x²-2x+1 ≤16.ax÷(x-1)<2
因式分解.不要做错了
1.a(a+1)²+(5a+2)x+6
2.(2a²-a)x²+(2a-3)x-12
3.6x²+17xy+12y²
4.x²-x-3
5.-2≤ -x²-2x+1 ≤1
6.ax÷(x-1)<2
因式分解.不要做错了1.a(a+1)²+(5a+2)x+6 2.(2a²-a)x²+(2a-3)x-123.6x²+17xy+12y²4.x²-x-35.-2≤ -x²-2x+1 ≤16.ax÷(x-1)<2
1.a(a+1)x²+(5a+2)x+6
=(ax+2)(ax+a+3)
2.(2a²-a)x²+(2a-3)x-12
=(ax+3)(2ax-x-4)
3.6x²+17xy+12y²
=(2x+3y)(3x+4y)
4.x²-x-3=(x²-x+1/4)-13/4
=(x-1/2+√13/2)(x-1/2-√13/2)
5.-2≤ -x²-2x+1 ≤1
-1
(1)x^3-2x 1=0 (x^3-x)-x 1=0 x(x 1)(x-1)-(x-1)=0 1. 注:这不叫因式分解了哈,这是等式。 x^3-2x 1=(x-1)(x^2 x
看来看去上面四个都分解不出来。你确定是因式分解?
5. 2≥x²+2x-1≥-1
左右加2 , 4≥x²+2x+1≥1
4≥(x+1)²≥1
得 2≥x+1≥1或者 -2≤x+1≤-1
解得 1≥x≥0或者-3≤x≤-2
哈哈哈哈你这个...
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看来看去上面四个都分解不出来。你确定是因式分解?
5. 2≥x²+2x-1≥-1
左右加2 , 4≥x²+2x+1≥1
4≥(x+1)²≥1
得 2≥x+1≥1或者 -2≤x+1≤-1
解得 1≥x≥0或者-3≤x≤-2
哈哈哈哈你这个小孩太可爱了~~~
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