Question

(2x+6)×(2,5x-5)=0 помогитє

Answer 1

Пошаговое объяснение:

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Answer 2

$5 {x}^{2} - 10x + 15x - 30 = 0 \ 5 {x}^{2} + 5x - 30 = 0 \ d = 25 - 4 times 5 times ( - 30) = 25 + 600 = 625 = {25}^{2} \ x1 = frac{10 + 25}{10} = 3.5 \ x2 = frac{10 - 25}{10} = - 1.5$