1.173^2-174*172（2.12345^2-12346*12344 3.（x+3)(x-1)-x(x+4) 4.(2m-3n)(m+4n)-(m+n)(2m+5n)）

想必现在有很多小伙伴对于1.173^2-174*172 2.12345^2-12346*12344 3.（x+3)(x-1)-x(x+4) 4.(2m-3n)(m+4n)-(m+n)(2m+5n)方面的知识都比较想要了解，那么今天小好小编就为大家收集了一些关于1.173^2-174*172 2.12345^2-12346*12344 3.（x+3)(x-1)-x(x+4) 4.(2m-3n)(m+4n)-(m+n)(2m+5n)方面的知识分享给大家，希望大家会喜欢哦。

1.173^2-174*172

=173²-(173+1)(173-1)

=173²-173²+1

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=1

2.12345^2-12346*12344

要然间数利常指放压收转务声类持习效。

=12345²-(12345+1)(12345-1)

=12345²-12345²+1

=1

3.（x+3)(x-1)-x(x+4)

=x²+2x-3-x²-4x

=-2x-3

工种化命文则色带，节律复便。

4.(2m-3n)(m+4n)-(m+n)(2m+5n)

=2m²+5mn-12n²-2m²-7mn-5n²

=-2mn-17n²

5.(3x-4y)(-3x-4y)-(-2x-y)(-2x+y)

=-9x²+16y²-4x²+y²

=-13x²+17y²

6.(1/3a+3/2b)(1/3a-3/2b)

=1/9a²-9/4b²

7.(2a+1)^2-(2a-1)^2

=4a²+4a+1-4a²+4a-1

=8a

8.-3x(x+1)(x-1)-x(3x+2)(2-3x)

=-3x³+3x-4x+9x³

=6x³-x

9.-4(2y-1/2)(1/2+2y)+3(2x-3)(2x+1)

=1-16y²+12x²-12x-9

=12x²-12x-16y²-8

10.(a+2)(a-2)-a(a+1)

=a²-4-a²-a

=-a-4

11.(x+1/3)(x^2+1/9)(x-1/3)

=(x²-1/9)(x²+1/9)

=x^4-1/81

12.(2^2+1)(2^4+1)(2^8+1)(2^16+1)

=(2-1)(2+1)(2^2+1)(2^4+1)(2^8+1)(2^16+1)÷(2+1)

=(2²-1)(2²+1)(2^4+1)(2^8+1)(2^16+1)÷3

=(2^4-1)(2^4+1)(2^8+1)(2^16+1)÷3

=(2^8-1)(2^8+1)(2^16+1)÷3

=(2^16-1)(2^16+1)÷3

=(2^32-1)÷3

本文到此结束，希望对大家有所帮助。