Question

EX3: 5x² + 4x - 2 = 0
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Answer 1

Resposta:

Explicação passo a passo:

a=5

b=4

c=-2

x=-4+-V4²-4.5.-2/2.5

x=-4+-V16+40/10

x=4+-V56/10

x=4+-4V14/10

x'=2+2V14/5

x''=2-2V14/5

S={2-2V14/5; 2+2V14/5}