计算,能用因式分解的用因式分解1、(1)y4一y2;(2)3ax2一3ay2;(3)4x3一8x2十4x;(4)a2一2a(b十c)十(b十c)2.2、(1)(2a一1)(a一4)一(a十3)(a一1);(2)t2一(t十1)(t一5);(3)(x十1)(x2十x十1);(4)(2x十3)(x2一x十1).3、x4十7
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![计算,能用因式分解的用因式分解1、(1)y4一y2;(2)3ax2一3ay2;(3)4x3一8x2十4x;(4)a2一2a(b十c)十(b十c)2.2、(1)(2a一1)(a一4)一(a十3)(a一1);(2)t2一(t十1)(t一5);(3)(x十1)(x2十x十1);(4)(2x十3)(x2一x十1).3、x4十7](/uploads/image/z/1113583-31-3.jpg?t=%E8%AE%A1%E7%AE%97%2C%E8%83%BD%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A3%E7%9A%84%E7%94%A8%E5%9B%A0%E5%BC%8F%E5%88%86%E8%A7%A31%E3%80%81%281%29y4%E4%B8%80y2%3B%282%293ax2%E4%B8%803ay2%EF%BC%9B%283%294x3%E4%B8%808x2%E5%8D%814x%EF%BC%9B%284%29a2%E4%B8%802a%28b%E5%8D%81c%29%E5%8D%81%28b%E5%8D%81c%292.2%E3%80%81%281%29%282a%E4%B8%801%29%28a%E4%B8%804%29%E4%B8%80%28a%E5%8D%813%29%28a%E4%B8%801%29%EF%BC%9B%282%29t2%E4%B8%80%28t%E5%8D%811%29%28t%E4%B8%805%29%EF%BC%9B%283%29%28x%E5%8D%811%29%28x2%E5%8D%81x%E5%8D%811%29%EF%BC%9B%284%29%282x%E5%8D%813%29%28x2%E4%B8%80x%E5%8D%811%29.3%E3%80%81x4%E5%8D%817)
计算,能用因式分解的用因式分解1、(1)y4一y2;(2)3ax2一3ay2;(3)4x3一8x2十4x;(4)a2一2a(b十c)十(b十c)2.2、(1)(2a一1)(a一4)一(a十3)(a一1);(2)t2一(t十1)(t一5);(3)(x十1)(x2十x十1);(4)(2x十3)(x2一x十1).3、x4十7
计算,能用因式分解的用因式分解
1、(1)y4一y2;(2)3ax2一3ay2;(3)4x3一8x2十4x;(4)a2一2a(b十c)十(b十c)2.2、(1)(2a一1)(a一4)一(a十3)(a一1);(2)t2一(t十1)(t一5);(3)(x十1)(x2十x十1);(4)(2x十3)(x2一x十1).
3、x4十7x2一8。4、a4一a3十a2一a。5.(ax十by)2十(bx一ay)2
计算,能用因式分解的用因式分解1、(1)y4一y2;(2)3ax2一3ay2;(3)4x3一8x2十4x;(4)a2一2a(b十c)十(b十c)2.2、(1)(2a一1)(a一4)一(a十3)(a一1);(2)t2一(t十1)(t一5);(3)(x十1)(x2十x十1);(4)(2x十3)(x2一x十1).3、x4十7
x^4+7x²-8
=(x²+8)(x²-1)
=(x²+8)(x+1)(x-1)
a^4-a³+a²-a
=(a^4+a²)-(a³+a)
=a²(a²+1)-a(a²+1)
=a(a²+1)(a-1)
(ax+by)²+(bx-ay)²
=a²x²+2abxy+b²y²+b²x²-2abxy+a²y²
=a²x²+b²y²+b²x²+a²y²
=(a²x²+a²y²)+(b²x²+b²y² )
=a²(x²+y²)+b²(x²+y²)
=(x²+y²)(a²+b²)