Question

Determine o valor de Δ (delta) na equação 3x2 - 7x + 5 = 0

Answer 1

Resposta:

3x²- 7x + 5 = 0

a=3 , b=-7 e c= 5

Δ = b²-4*a*c

Δ =(-7)²-4*3*5

Δ =49 -60

Δ = -11

Answer 2

$\large\sf{} {3x}^{2} - 7x + 5 = 0 \\ \large\sf{}\begin{cases}a = 3 \\ b = - 7 \\ c = 5\end{cases} \\ \\ \large\sf{}\Delta = \left( {-7} \right)^{2} - 4 \times 3 \times 5 \\ \large\sf{}\Delta = 49 - 4 \times 3 \times 5 \\ \large\sf{}\Delta = 49 - 60 \\ \large\sf{}\Delta = - 11$

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