Tekan tombol attachment. (saya lampirkan)

Tekan tombol attachment. (saya lampirkan)

jawaban

$x < - frac{5}{3} x > 4$

penjelasan dengan langkah langkah

$3x {}^{2} - 7x - 20 > 0$

$3x {}^{2} - 7x - 20 = 0$

$frac{x = - ( - 7) + sqrt{( - 7) {}^{2 } - 4 times 3( - 20)} }{2 times 3}$

$x = frac{7 + 17}{6}$

$x = 4 \ x = - frac{5}{3}$

$3(x - 4)(x + frac{5}{3} ) > 0$

$x - 4 < 0 \ x + frac{5}{3} < 0$

$x < - frac{5}{3}$

$x + frac{5}{3} > 0 \ x - 4 > 0 :$

$x > 4$

$= x < - frac{5}{3} x > 4$