Question

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

Answer 1

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