Question

2xao quadrado -14x×20=0​

Answer 1

Resposta:

$2x ^{2} - 14x + 20 = 0 \\ a = 2 \\ b = - 14 \\ c = 20 \\ delta = ( - 14) ^{2} - 4.2.20 \\ delta = 196 - 160 \\ delta = 36 \\ \\ x1 = \frac{ 14 + 6}{4} = 5 \\ \\ x2 = \frac{14 - 6}{4} = 2$