Решение задания приложено
2951:13=227
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25c¹⁰=(5c⁵)²;
2) (3⁹x⁹*9³x¹²):(3⁵x¹⁵*27³x³*x)=75;
3⁹*3⁶*x²¹:(3⁵3⁹x¹⁹)=75;
3¹⁵x²:3¹⁴=75;
x²=25;
x=5; x=-5;
Ax-b+bx-a=(ax<span>+</span>bx)-(a<span>+</span>b<span>)=x(a+</span>b<span>)-(a+</span>b<span>)=(x-1)(a+</span>b<span>)</span>