计算 ①2(x^2)^3*x^2-3(x^3)^2+5x^2*x^6 ②(-2^2)*(-2)^2_数学解答

计算 ①2(x^2)^3*x^2-3(x^3)^2+5x^2*x^6 ②(-2^2)*(-2)^2

人气：419 ℃　时间：2020-02-04 08:35:20

解答

2(x^2)^3*x^2-3(x^3)^2+5x^2*x^6
=2x^6*x^2-3x^6+5x^2*x^6
=2x^(6+2)-3x^6+5x^(2+6 )
=2x^8-3x^6+5x^8
=2x^8+5x^8-3x^6
=7x^8-3x^6
(-2^2)*(-2)^2
=-4*4
=-16