分解因式(九分之四x²-0.01n²)分解因式:①x²2x+1 ②1-6y+9y²③4a²+4a+1④1+m+四分之m²⑤25x四次方+10x²+1⑥-x²-4y²+4xy
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![分解因式(九分之四x²-0.01n²)分解因式:①x²2x+1 ②1-6y+9y²③4a²+4a+1④1+m+四分之m²⑤25x四次方+10x²+1⑥-x²-4y²+4xy](/uploads/image/z/10020722-50-2.jpg?t=%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%88%E4%B9%9D%E5%88%86%E4%B9%8B%E5%9B%9Bx%26%23178%3B-0.01n%26%23178%3B%EF%BC%89%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%EF%BC%9A%E2%91%A0x%26%23178%3B2x%2B1+%E2%91%A11-6y%2B9y%26%23178%3B%E2%91%A24a%26%23178%3B%2B4a%2B1%E2%91%A31%2Bm%2B%E5%9B%9B%E5%88%86%E4%B9%8Bm%26%23178%3B%E2%91%A425x%E5%9B%9B%E6%AC%A1%E6%96%B9%2B10x%26%23178%3B%2B1%E2%91%A5-x%26%23178%3B-4y%26%23178%3B%2B4xy)
分解因式(九分之四x²-0.01n²)分解因式:①x²2x+1 ②1-6y+9y²③4a²+4a+1④1+m+四分之m²⑤25x四次方+10x²+1⑥-x²-4y²+4xy
分解因式(九分之四x²-0.01n²)
分解因式:①x²2x+1 ②1-6y+9y²③4a²+4a+1④1+m+四分之m²⑤25x四次方+10x²+1⑥-x²-4y²+4xy
分解因式(九分之四x²-0.01n²)分解因式:①x²2x+1 ②1-6y+9y²③4a²+4a+1④1+m+四分之m²⑤25x四次方+10x²+1⑥-x²-4y²+4xy
:①x²-2x+1=(x-1)²
②1-6y+9y²=(1-3y)²
③4a²+4a+1=(2a+1)²
1+m+四分之m²=(1+m/2)²
25x四次方+10x²+1=(5x+1)²
⑥-x²-4y²+4xy=-(x-2y)²
4/9x^2-0.01n^2=(2/3x-0.1n)(2/3x+0.1n)
①x^2+2x+1=(x+1)^2 x^2-2x+1=(x-1)^2
②1-6y+9y^2
=9y^2-6y+1
=(3y-1)^2
③4a^2+4a+1=(2a+1)^2
④1+m+m^2/4
=(m/2)^2+m+1
=(m/2+1)^2
⑤25x^4+10x^2+1=(5x^2+1)^2
⑥-x^2-4y^2-4xy
=-(x^2+4xy+4y^2)
=-(x+2y)^2