Làm hết giúp em vs ạ

`1)(5x+3yz)²`

`=(5x²)+2.5x.3yz+(3yz)²`

`=25x²+30xyz+9y²z²`

`2)(y³x-3ab)²`

`=(y³x)²-2.y³x.3ab+(3ab)²`

`=y^6x²-6y³xab+9a²b²`

`3)(x²-6z)(x²+6z)`

`=(x²)^2-(6z)²`

`=x^4-36z²`

`4)(2x-3)³`

`=(2x)³-3.(2x)².3+3.2x.3²+3³`

`=8x³-36x²+54x+27`

`5)(a+2b)³`

`=a³+3.a².2b+3.a.(2b)²+(2b)³`

`=a³+6a²b+12ab²+8b³`

`6)(5x+2y)²`

`=(5x)²+2.5x.2y+(2y)²`

`=25x²+20xy+4y²`

`7)(-3x+2)²`

`=(-3x)²+2.(-3x).2+2²`

`=9x²-12x+4`

`8)(2/3x+1/3y)^2`

`=(2/3x)^2 +2. 2/3x . 1/3y+(1/3y)^2`

`=4/9x²+4/9xy+1/9y²`

`9)(2x-5/2y)^2`

`=(2x)²-2.2x. 5/2y+(5/2y)^2`

`=4x²-10xy+25/4y²`

`10)(x+4/3y²)^2`

`=x²+2.x. 4/3y²+(4/3y²)^2`

`=x²+8/3xy²+16/9y^4`

`11)(2x²+5/3y)^2`

`=(2x²)^2+2.2x². 5/3y+(5/3y)^2`

`=4x^4+20/3x²y+25/9y²`

`12)(1/2-x)^3`

`=(1/2)^3-3.(1/2)^2 .x+3 . 1/2 .x²-x³`

`=1/8-3/4x+3/2x²-x³`

`13)(2x-1)³`

`=(2x)³-3.(2x)².1+3.2x.1²-1³`

`=8x³-12x²+6x-1`

`14)(2x-3y)³`

`=(2x)³-3.(2x)².3y+3.2x.(3y)²-(3y)³`

`=8x³-36x²y+54xy²-27y³`

`15)(0,01-xy)³`

`=0,01³-3.0,01².xy+3.0,01.(xy)²-(xy)³`

`=0,000001-0,0003xy+0,03x²y²-x³y³`

`16)(1/2+x)³`

`=(1/2)^3 +3.(1/2)^2 .x+3. 1/2 .x²+x³`

`=1/8+3/4x+3/2x²+x³`

`17)(2x+1)³`

`=(2x)³+3.(2x)².1+3.2x.1²+1³`

`=8x³+12x²+6x+1`

`18)(2x+3y)³`

`=(2x)³+3.(2x)².3y+3.2x.(3y)²+(3y)³`

`=8x³+36x²y+54xy²+27y³`

`19)(0,01+xy)³`

`=0,01³+3.0,01².xy+3.0,01.(xy)²+(xy)³`

`=0,000001+0,0003xy+0,03x²y²+x³y³`