已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0,求式子(-2xy)²×(-y²)×6xy²的值我不是太懂,请帮我讲解一下,
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![已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0,求式子(-2xy)²×(-y²)×6xy²的值我不是太懂,请帮我讲解一下,](/uploads/image/z/980928-0-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%AE%9E%E6%95%B0x%2Cy%E6%BB%A1%E8%B6%B3%E6%9D%A1%E4%BB%B6%7C2x%2B3y%2B1%7C%2B%EF%BC%88x%2B3y%2B5%29%26%23178%3B%3D0%2C%E6%B1%82%E5%BC%8F%E5%AD%90%EF%BC%88-2xy%EF%BC%89%26%23178%3B%C3%97%EF%BC%88-y%26%23178%3B%EF%BC%89%C3%976xy%26%23178%3B%E7%9A%84%E5%80%BC%E6%88%91%E4%B8%8D%E6%98%AF%E5%A4%AA%E6%87%82%2C%E8%AF%B7%E5%B8%AE%E6%88%91%E8%AE%B2%E8%A7%A3%E4%B8%80%E4%B8%8B%2C)
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已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0,求式子(-2xy)²×(-y²)×6xy²的值我不是太懂,请帮我讲解一下,
已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0,求式子(-2xy)²×(-y²)×6xy²的值
我不是太懂,请帮我讲解一下,
已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0,求式子(-2xy)²×(-y²)×6xy²的值我不是太懂,请帮我讲解一下,
因为实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0
所以2x+3y+1=0
且x+3y+5=0
解得x=4,y=-3
所以(-2xy)²×(-y²)×6xy²
=-24x³y³y³
=-24×4³×(-3)³×(-3)³
=-1119744
已知实数x,y满足条件|2x+3y+1|+(x+3y+5)²=0
而|2x+3y+1|≥0,(x+3y+5)²≥0,所以这两部分都只能等于0,
即|2x+3y+1|=0,(x+3y+5)²=0,得到x=4,y=-3;
因此(-2xy)²×(-y²)×6xy²=-24x³y^6=24×4³×3^6=1119744
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