Question

A= 3x²-x-2=0 - formula baskara
B=x²+4x+3=0

Answer 1

Resposta:

Explicação passo-a-passo:

A )

3x² - x - 2 = 0

x = - b ± √b² - 4*a*c/2*a

x ' = 1 + √1+24/2*3

x' = 1 + 5/6

x' = 6/6 = 1

x" = 1 - 5/6

x" = -4/6 = -2/3

S = { 1 , -2/3}

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B)

x² + 4x + 3 = 0

x = - b ±√b² - 4*a*c/2*a

x' = - 4 + √16 - 12/2

x' = - 4 +√4/2

x' = - 4 + 2/2

x' = - 2/2

x' = - 1

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x" = - 4 - 2/2

x" = -6/2

x" = - 3

S = { -1 , -3 }

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