(5х²+2у³)(5х²-2у³)=25х⁴-4у⁶
(а³-в²)(а³+в²)=а⁶-в⁴
(0,7х+у²)(0,7х-у²)=0,49х²-у⁴
(0,4с+0,8у²)(0,8у²-0,4с)=0,64у⁴-0,16с²
(0,4х⁶-0,7у⁹)(0,7у⁹+0,4х⁶)=0,16х¹²-0,79у¹⁸
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(5х²+2у³)(5х²-2у³)=25х⁴-4у⁶
(а³-в²)(а³+в²)=а⁶-в⁴
(0,7х+у²)(0,7х-у²)=0,49х²-у⁴
(0,4с+0,8у²)(0,8у²-0,4с)=0,64у⁴-0,16с²
(0,4х⁶-0,7у⁹)(0,7у⁹+0,4х⁶)=0,16х¹²-0,79у¹⁸