edhreii edhreii
  • 13-08-2020
  • Mathematics
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Solve the equation using the quadratic formula. Please help !

Solve the equation using the quadratic formula Please help class=

Respuesta :

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  • 13-08-2020

Answer:

decimal

x = 5.284 or 0.284

fraction

x = (21.136) / 4 or (1.136) / 4

Step-by-step explanation:

2x² - 10x - 3 = 0

x = [-b ± √b² - 4(a)(c)] / 2(a)

x = {-(-10) ± √[(-10)² - 4(2)(-3)]} / 2(2)

x = [10 ± √(100  + 24)] / 4

x = (10 ± √124) / 4

x = (10 ± 11.136) / 4

x = (21.136) / 4 or (1.136) / 4

x = 5.284 or 0.284

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