(2x+7)² =
(w+3x)² =
(6+3x)² =
(4+2x)² =
(6+2b)² =
(x+2c)² =
(3x+2y)² =
1# 4x²+28x+49
2# w²+6wx +9x²
3# 36+ 36x²+9x²
4# 16+16x+4x²
5# 36+24b+4b²
6# x²+4cx+4c²
7# 9x²+12xy+4y²
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1# 4x²+28x+49
2# w²+6wx +9x²
3# 36+ 36x²+9x²
4# 16+16x+4x²
5# 36+24b+4b²
6# x²+4cx+4c²
7# 9x²+12xy+4y²
1. 4x²+2*2x*8+49. = 4x²+28x+49
2. w²+2*w*3x+9x² =w²+6wx+9x²
3. 36+2*6*3x+9x² =36+36x+9x²
4. 16+2*4*2x+4x² =16+16x+4x²
5. 36+2*6*2b+4b² =36+24b+4b²
6. x²+2*x*2c+4c² =x²+4xc+4c²
7. 9x²+2*3x*2y+4y² = 9x²+12xy+4y²