Question

a)(3x-1/2)²+(x/3-1/2)(x/3+1/2)-(2x/3+3)²= b)(3x+1/3)²+(3x/2-1/3)(3x/2+1/3)-(x/2-3)²

Answer 1

Acelasi gen 
A)9xla2-2*3x*1/2+1/4+xla2/9-1/4-4xla2/9-2*3*2x/3-9=
=9xla2-3x+1/4+xla2/9-1/4-4xla2/9-4x-9=
=9xla2-7x+xla2/9-4xla2/9-9=
=9xla2-7x-3xla2/9-9=
=9xla2-7x-xla2/3-9=
=(27xla2-21x-xla2-27)/3=
=26xla2/3-21x/3-27/3=
=26xla2/3-7x-9

B)9xla2+2*3x*1/3+1/9+9xla2/4-1/9-xla2/4+2*3*x/2-9=
=9xla2+2x+1/9+9xla2/4-1/9-xla2/4+3x-9=
=9xla2+5x+8xla2/4-9=
=(36xla2+20x+8xla2-36)/4=
=44xla2/4+20x/4-36/4=
=11xla2+5x-9