Rút gọn biểu thức sau
làm bài 3 giúp mình ( làm được tặng 50 hoặc 100 coin )
----- Nội dung ảnh -----
**Bài 3: Rút gọn biểu thức sau:**
1) (2x+1)2+(2x−1)2
2) (x+1)2−(x−1)2
3) (x+2y)2−(x−2y)2
4) (3x+y)2+(x−y)2
5) −(−x+5)2−(x−3)2
6) (3x−2)2−(3x−1)2
7) (x−4y)2+(x+4y)2
8) −(−2x+3)2−(5x−3)2
9) (x+3)2−(5x−3)2
10) (2x+1)2−(3x−1)2
11) −(x−y)2+(2y+x)2
12) (x+2)2−(x−1)2
13) (2x+7)2−(−2x−3)2
14) (x−3)2−x2+10x−7
15) (x+4)(x−2)−(x−3)2
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**Bài 4: Thực hiện phép tính:**
1) x(1−x)+(x−1)2
2) (x−3)2−x2+10x−7
3) (x+2)2−(x−3)(x+1)
4) (x+4)(x−2)−(x−3)2
5) (x2)2−(x−3)(x+1)
6) (3x−2)2−(3x−1)2
7) (x−2)(x+2)−(x−3)(x+1)
8) (x−2)(x+2)−(x−3)(x+1)
9) (x+1)2−(x−2)(x+2)−4x
10) (x+2)2−(x−3)(x−3)+10
----- Nội dung ảnh -----
**Bài 3: Rút gọn biểu thức sau:**
1) (2x+1)2+(2x−1)2
2) (x+1)2−(x−1)2
3) (x+2y)2−(x−2y)2
4) (3x+y)2+(x−y)2
5) −(−x+5)2−(x−3)2
6) (3x−2)2−(3x−1)2
7) (x−4y)2+(x+4y)2
8) −(−2x+3)2−(5x−3)2
9) (x+3)2−(5x−3)2
10) (2x+1)2−(3x−1)2
11) −(x−y)2+(2y+x)2
12) (x+2)2−(x−1)2
13) (2x+7)2−(−2x−3)2
14) (x−3)2−x2+10x−7
15) (x+4)(x−2)−(x−3)2
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**Bài 4: Thực hiện phép tính:**
1) x(1−x)+(x−1)2
2) (x−3)2−x2+10x−7
3) (x+2)2−(x−3)(x+1)
4) (x+4)(x−2)−(x−3)2
5) (x2)2−(x−3)(x+1)
6) (3x−2)2−(3x−1)2
7) (x−2)(x+2)−(x−3)(x+1)
8) (x−2)(x+2)−(x−3)(x+1)
9) (x+1)2−(x−2)(x+2)−4x
10) (x+2)2−(x−3)(x−3)+10