Question

qual é o delta de :
9x²-4=0​

Answer 1

$\Delta = 144$

Na equação $9x^2 - 4 = 0$, temos que$a = 9, b = 0, c = -4.$

$\Delta = b^2 - 4.a.c\\\\\Delta = (0)^2 - 4.9.(-4)\\\\\Delta = 0 + 144\\\\\Delta = 144$

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Answer 2

$\mathsf{9x^2-4=0 }$

$\mathsf{ \Delta=b^2-4\cdot a\cdot c}$

$\mathsf{\Delta=0^2-4\cdot9\cdot(-4) }$

$\mathsf{\Delta=0+144 }$

$\boxed{\boxed{ \mathsf{\Delta=144}} }$