2) (2а³+2b³) / (a²-b²) = 2 (a+b)(a²-ab+b²) / (a-b)(a+b) = 2(a²-ab+b²) / (a-b)
a=2
b=3
2(4-6+9) / (2-3) = -2*7= -14
2) (2а³+2b³) / (a²-b²) = 2 (a+b)(a²-ab+b²) / (a-b)(a+b) = 2(a²-ab+b²) / (a-b)
a=2
b=3
2(4-6+9) / (2-3) = -2*7= -14