1) 0,16-0,8t+t^2 =(0.4-t)^2
2)z^2+1,4z+0,49 =(z+0.7)^2
3)0,36-1,2b+b^2 =(0.6-b)^2
4)2,25-3x+x^2 =(1.5-x)^2
5)y^2-3,2y+2,56 =(y-1.6)^2
6)3,61+3,8d+d^2=(1.9+d)^2
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1) 0,16-0,8t+t^2 =(0.4-t)^2
2)z^2+1,4z+0,49 =(z+0.7)^2
3)0,36-1,2b+b^2 =(0.6-b)^2
4)2,25-3x+x^2 =(1.5-x)^2
5)y^2-3,2y+2,56 =(y-1.6)^2
6)3,61+3,8d+d^2=(1.9+d)^2