A) (8-a)² (6+b) ² (5a+1) ² (6c-2)² б) (8x+8y)² (6m-5n)² (17x - 12a)² (a²+4x)²

[latex](8-a)^2=64-16a+a^2[/latex][latex](6+b)^2=36+12b+b^2[/latex][latex](5a+1)^2=25a^2+10a+1[/latex][latex](6c-2)^2=36c^2-24c+4[/latex][latex](8x+8y)^2=64x^2+128xy+64y^2[/latex][latex](6m-5n)^2=36m^2-60mn+25n^2[/latex][latex]( frac{1}{7x} - frac{1}{2a} )^2= frac{1}{49x^2} -2 frac{1}{14ax} + frac{1}{4a^2} [/latex][latex](a^2+4x)^2=a^4+8a^2x+16x^2[/latex]