因式分解 x*+10*+21-4y*-8y
人气：375 ℃ 时间：2020-05-30 19:41:07
解答
x²+10x+21-4y²-8y
=x²+10x+25-4y²-8y-4
=(x+5)²-4(y+1)²
=[(x+5)+2(y+1)][(x+5)-2(y+1)]
=(x+2y+7)(x-2y+3)
推荐
猜你喜欢
- 因式分解：4a²bc-6ab+32b² （x²+x）²-8（x²+x）+12
- A:Peter is never late for school,__ he?B:___.He always comes on time.(A)is;Yes (B)is;No
- 一首鼓励人奋进的古诗
- （Everyone ,you ,here ,Looking ,is ,for ,there ,and.）用这些英语单词来连词成句
- 有一张厚为0.1mm,假设可以一直对折,请问：对折以后的厚度能否超过珠穆朗玛峰的高度8844?若能
- A; what's the capital of china B; ( ),it's beautiful,too.
- 已知c>2,设命题p:x²+4x+c=0无实根命题q:不等式2x-c>1的解集包含｛x|x≥3｝
- 发音以元音开头的字母有哪些a e i o u m
