(3x+x²)²-x²(x-5)(x+5)+2x(8-3x²)
9х²+6х³+х⁴-х²(х²-25)+16х-6х³
9х²+6х³+х⁴-х⁴+25х²+16х-6х³
34х²+16х
2х(17х+8)
(а+b)(a-b)=a²-b²
(a+b)²=a²+2ab+b²
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(3x+x²)²-x²(x-5)(x+5)+2x(8-3x²)
9х²+6х³+х⁴-х²(х²-25)+16х-6х³
9х²+6х³+х⁴-х⁴+25х²+16х-6х³
34х²+16х
2х(17х+8)
(а+b)(a-b)=a²-b²
(a+b)²=a²+2ab+b²