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49(a-b)方-16(a+b)方 分解因式1.49(a-b)方-16(a+b)方2.(2x+y)方-(x+2y)方3.
题目内容:
49(a-b)方-16(a+b)方 分解因式
1.49(a-b)方-16(a+b)方
2.(2x+y)方-(x+2y)方
3.(x²+y²)²-x²y²
4.(m+n)²-n²
5.3ax²-3ay的四次方优质解答
1.49(a-b)方-16(a+b)方 =(7(a-b)+4(a+b))(7(a-b)-4(a+b))=(11a-3b)(3a-11b)2.(2x+y)方-(x+2y)方 =[(2x+y)+(x+2y)][(2x+y)-(x+2y)]=(3x+3y)(x-y)=3(x+y)(x-y)=3x^2-3y^23.(x²+y²)²-x²y&s...
1.49(a-b)方-16(a+b)方
2.(2x+y)方-(x+2y)方
3.(x²+y²)²-x²y²
4.(m+n)²-n²
5.3ax²-3ay的四次方
优质解答
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