Question

(6-3x)的平方减去(3-2/3x)的平方等于多少?

Answer 1

化凯数销简计盯游算过程如下毕贺：
(6-3x)^2-(3-2x/3)^2
=[(6-3x)+(3-2x/3)][(6-3x)-(3-2x/3)]
=(6-3x+3-2x/3)(6-3x-3+2x/3)
=(6+3-3x-2x/3)(6-3-3x+2x/3)
=(9-11x/3)(3-7x/3).

Answer 2

(6-3x)的颤誉平方减闷洞搭去(3-2/3x)的平方
=(6-3x)^2 - (3 -(2/3)x)^2
=36-36x+9x^2 -(9 - 4x + (4/9)x^2 )
=27-32x + (85/蚂拿9)x^2

Answer 3

利用平方闹瞎差公式液团空
(6-3x)²-(3-2x/3)²
=(9-11x/或稿3)(3-7x/3)
=27-32x+77x²/9

Answer 4

原式=36 - 36x + 9x²陵谨滚 - [9 - 4x + (4/晌举9)x²]
=36 - 36x + 9x²尺余 - 9 + 4x - (4/9)x²
=(36-9) - (36-4)x + (9 - 4/9)x²
=27 - 32x + (77/9)x²