Question

X ao quadrado - 7x +3 = 0

Answer 1

x² - 7x + 3 = 0

A= 1

B= - 7

C= 3

∆= b² - 4ac

∆= ( - 7)² - 4 • 1 • 3

∆= 49 - 12

∆= 37

x= - b ± √∆ / 2a

x= - ( - 7) ± √37/2 • 1

x'= 7 + √37 / 2

x"= 7 - √37/2