Verified answer

Solución:

(3x - 7)² - 5(2x + 1)(x - 2) = -x² - (-(3x + 1))

(9x² - 42x + 49) - 5(2x² - 3x - 2) = -x² - (-3x - 1)

9x² - 42x + 49 - 10x² + 15x + 10 = -x² + 3x + 1

-x² - 27x + 59 = -x² + 3x + 1

-x² + x² - 27x - 3x = 1 - 59

-30x = -58......./* (-1)

30x = 58

x = 58/30 → 58:2 / 30:2

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x = 29/15

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Rápido pàra hoy

xo = 29/15

x=-7/8