Question

α+β=[5 1] α-β=[1 5] вычислите α и β

Answer 1

$+\left \{ {{\alpha+\beta=51} \atop {\alpha-\beta=15}} \right.\\ ------\\2\alpha=66\\\alpha =33\\\beta=51-\alpha=51-33=18\\\\Otvet:\boxed{\alpha=33;\beta=18}$