Question

as raizes da equaçao x ao quadrado +7x-10=0
${x}^{2} + 7x - 10 = 0$
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Answer 1

x² + 7x - 10 = 0

A= 1

B= 7

C= - 10

∆= b² - 4ac

∆= 7² - 4 • 1 • ( - 10)

∆= 49 + 40

∆= 89

x= - b ± √∆ /2a

x= - 7 ± √89/2 • 1

x'= - 7 + √89/2

x''= - 7 - √89/2