1 a zał. x≠-5 i x≠1,5 (4x²-9)/(x²+10x+25) *(2x+10)/(2x-3)= (2x-3)(2x+3)/(x+5)²*2(x+5)/(2x-3)= (2x+3)/(x+5)*2=2(2x+3)/(x+5)=(4x+6)/(x+5) b zał. x≠-1 i x≠0 i x≠3 i x≠ -3 (x-3)(x+3)/(x+1)²:x(x²-9)4(x-1)(x+1)= (x-3)(x+3)/(x+1)²*4(x-1)(x+1)/x(x-3)(x+3)= 1/(x+1)*4(x-1)/x=4(x-1)/x(x+1)=(4x-4)/(x²+x) c zał. x≠-3 i x≠1/2 (2x-1)/2(x+3)*(x-3)(x+3)/(2x-1)²= 1/2*(x-3)/(2x-1)=(x-3)/(4x-2) d zał. x≠1 i x≠ -1 i x ≠2 i x ≠-2 (x-2)(x+2)/(x-1)²:x(x-2)(x+2)/3(x-1)(x+1)= (x-2)(x+2)/(x-1)²* 3(x-1)(x+1)/x(x-2)(x+2)= 1/(x-1)* 3(x+1)/x=(3x+3)/(x²-x) 2 zał.x ≠3 i x≠ 2 i x ≠0 /*(x-3)(x-2)x x(x-2)+x(x-3)=(x-3)(x-2) x²-2x+x²-3x=x²-2x-3x+6 x²=6 x=√6 lub x=-√6 b zał.x ≠1 i x≠ 2 i x ≠0 /*(x-1)(x-2)x x(x-2)+x(x-1)=(x-1)(x-2) x²-2x+x²-x=x²-2x-x+2 x²=2 x=√2 lub x=-√2
