Question

Resolva pela formula de Bháskara
x² + 14x - 60 = 28

Answer 1

x² + 14x - 60 = 28
x² + 14x - 60 - 28 = 0
x² + 14x - 88 = 0
a = 1; b = 14; c = - 88

Δ = b² - 4ac
Δ = 14² - 4.1.(-88)
Δ = 196 + 352
Δ = 548

548: 2
274: 2
137 : 137
1

x = - b +/- √Δ = - 14 +/- √548
           2a                2.1

x = - 14 + 2√37  =  - 7 + √37
             2

x = - 14 - 2√37 = - 7 - √37
            2