1. X²+2xy+y²
2. 5²+10t+t²
3. 25x²-30x+9
4. x²-6x+9
5. 0.01m²+0.1mn+0.25n²
6. 9+12t+4t²
1. X²+2xy+y²
2. 5²+10t+t²
3. 25x²-30x+9
4. x²-6x+9
5. 0.01m²+0.1mn+0.25n²
6. 9+12t+4t²
1. X²+2xy+y²=(x+y)²
2. 5²+10t+t²=(5+t)²
3. 25x²-30x+9=(5x+3)²
4. x²-6x+9=(x-3)²
5. 0.01m²+0.1mn+0.25n²=(0.1m+0.5n)²
6. 9+12t+4t²=(3+2t)²
1.(x+y)^2
2.(t+5)^2
3.(5x-3)^2
4.(x-3)^2
5.(0.1m+0.5n)^2
6.(2t+3)^2
1.是公式
1.(x+y)^2
2.(t+5)^2
3.(5x-3)^2
4.(x-3)^2
5.(0.1m+0.5n)^2
6.(2t+3)^2
LZ这种问题没过程的啊!像是口算来做的吧
1. X²+2xy+y²=(x+y)^2
2. 5²+10t+t²=(5+t)^2
3. 25x²-30x+9=(5x-3)^2
4. x²-6x+9=(x-3)^2
5. 0.01m²+0.1mn+0.25n²=(0.m+0.5n)^2
6. 9+12t+4t²=(3+2t)^2
直接运用公式即可
1. X²+2xy+y²=(x+y)²
2 5²+10t+t²=(t+5)²
3 25x²-30x+9=(5x-3)²
4 x²-6x+9=(x-3) ²
5 0.01m²+0.1mn+0.25n²=(0.1m+0.5n)²
6 9+12t+4t²=(2t+3)²
1、X²+2xy+y²
=(x+y)^2
2. 5²+10t+t²
=(5+t)^2
3. 25x²-30x+9
=(5x-3)^2
4. x²-6x+9
=(x-3)^2
5. 0.01m²+0.1mn+0.25n²
=(0.1m+0.5n)^2
6. 9+12t+4t²
=(3+2t)^2