急急急,请写出这几个数学题的完整步骤,脱式步骤 给好评哦!
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(-5a^6)^2+(-3a^3)^3*(-a^3)
=25a^12+27a^12
=52a^12
5x(x^2-2x+4)+x^2(x-1)
=5x^3-10x^2+20x+x^3-x^2
=6x^3-11x^2+20x
(2ax)^2*(-2/5a^4x^3y^3)除以(-1/2a^5xy^2)
=4a^2x^2*(-2/5a^4x^3y^3)除以(-1/2a^5xy^2)
=-8/5a^6x^5y^3除以(-1/2a^5xy^2)
=4/5ax^4y
如果对你有所帮助请好评谢谢
=25a^12+27a^12
=52a^12
5x(x^2-2x+4)+x^2(x-1)
=5x^3-10x^2+20x+x^3-x^2
=6x^3-11x^2+20x
(2ax)^2*(-2/5a^4x^3y^3)除以(-1/2a^5xy^2)
=4a^2x^2*(-2/5a^4x^3y^3)除以(-1/2a^5xy^2)
=-8/5a^6x^5y^3除以(-1/2a^5xy^2)
=4/5ax^4y
如果对你有所帮助请好评谢谢
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