ПОМОГИТЕ!! СРОЧНО!! ДАЮ 100 БАЛОВ!!! Розв'яжіть системи рівнянь:
1) {3x² - 8y = -5; -2y+5x = 3}

2) {x² + 9y² = 13; xy=2}

НЕОБДХОДИМО ПОДРОБНОЕ РЕШЕНИЕ!!!​
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