(1)(2xy的2次方z)(-1/3xy)= (2)4ab(2ab的2次方+3a的2次方b)(3)(5+8x)(5-8x

1个回答

  • 简单代数式:XY +8(X + Y)= 1 +3 * 8 = 25

    简单的代数结果:4B-A = -4-1 / 2 = -4.5

    3.

    X ^ 2 + AX +7-(BX ^ 2-2X +9 Y-1)=(1 - B)×(A +2)^ 2 +-1416 +8

    内容,因为的值之间的差异的字母x,因此

    1 = 0,A 2 = 0解= 1,= -2

    (2a的+ b的)^ 2013 =(-2 * 2 +3)^ 2013 = -1

    2.

    1. 2X +4 3-4M +4 N = 3-4(百万元)= 3-4 * 2 = -3

    2.因为一个+1 +(+β-2)^ 2 = 0,因此,

    一个+1 = 0①

    一个+β-2 = 0(2)

    ① ②= -1,= 3 />原始的简化-1/2ab-7AB ^ 2 = 1/6 7 * 9 = 379/6