1.若关于x的两个方程5x-3=4x与ax-12=0的解相同,则a=_____.2.当x=-2时1.若关于x的两个方程5x-3=4x与ax-12=0的解相同,则a=_____.2.当x=-2时,二次三项式2x^2+mx+4的值等于18,那么当x=2时,该代数式的值等于_______.3.
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![1.若关于x的两个方程5x-3=4x与ax-12=0的解相同,则a=_____.2.当x=-2时1.若关于x的两个方程5x-3=4x与ax-12=0的解相同,则a=_____.2.当x=-2时,二次三项式2x^2+mx+4的值等于18,那么当x=2时,该代数式的值等于_______.3.](/uploads/image/z/1107819-27-9.jpg?t=1.%E8%8B%A5%E5%85%B3%E4%BA%8Ex%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%96%B9%E7%A8%8B5x-3%3D4x%E4%B8%8Eax-12%3D0%E7%9A%84%E8%A7%A3%E7%9B%B8%E5%90%8C%2C%E5%88%99a%3D_____.2.%E5%BD%93x%3D-2%E6%97%B61.%E8%8B%A5%E5%85%B3%E4%BA%8Ex%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%96%B9%E7%A8%8B5x-3%3D4x%E4%B8%8Eax-12%3D0%E7%9A%84%E8%A7%A3%E7%9B%B8%E5%90%8C%2C%E5%88%99a%3D_____.2.%E5%BD%93x%3D-2%E6%97%B6%2C%E4%BA%8C%E6%AC%A1%E4%B8%89%E9%A1%B9%E5%BC%8F2x%5E2%2Bmx%2B4%E7%9A%84%E5%80%BC%E7%AD%89%E4%BA%8E18%2C%E9%82%A3%E4%B9%88%E5%BD%93x%3D2%E6%97%B6%2C%E8%AF%A5%E4%BB%A3%E6%95%B0%E5%BC%8F%E7%9A%84%E5%80%BC%E7%AD%89%E4%BA%8E_______.3.)
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