Question

Resolva x2+5x-14=0 Formula De Bhaskara

Answer 1

Δ = b² - 4ac
Δ = 5² - 4 * 1 * (- 14)
Δ = 25 + 56
Δ = 81

x = - b ± √Δ
     ________
          2a
x = - 5 ± √81
     _________
        2 * 1
x = - 5 ± 9
     _______
         2

x' = (- 5 + 9) ÷ 2
x' = 4 ÷ 2
x' = 2

x"= (- 5 - 9) ÷ 2
x" = - 14 ÷ 2
x" = - 7

Resposta: {2; - 7}

Answer 2

x² +5x -14
Δ= b² -4ac
Δ= 5² -4.1.(-14)
Δ= 25 + 56
Δ= 81

x= -b +/- √Δ/ 2a
x= -5 +/- √81 / 2.1
x'= -5 +9 / 2
x'= 4/2
x'= 2

x''= -5 -9 /2
x''= -14/2
x''= -7

Bons estudos!