Question

1x²+1x-12=0 , encontre as raízes

Answer 1

Resposta:

S= {-4, 3}

Explicação passo-a-passo:

A= 1 B=1 C=-12

Δ= 1²- 4× 1 × (-12)

Δ= 1 + 48

Δ= 49

x= - 1 +- √49 x= -1 +- 7

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2×1 2

x¹= - 1 - 7 = -8 = -4

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2 2

x¹= - 1 + 7 = 6 = 3

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2 2