Question

limites
$\lim_{x\to 2\ }\frac{5x^{2} -8x -4}{x-2}$

Answer 1

Resposta:

12

Explicação passo-a-passo:

Lim (5x²-8x-4)/(x-2)

X=>2

Lim (5x²+2x-10x-4)/(x-2)

X=>2

Lim (5x²+2x-10x-4)/(x-2)

X=>2

F(2)=5x²-8x-4

F(2)=5*4-8*2-4

F(2)=20-16-4

F(2)=0

F(2)=x-2

F(2)=2-2

F(2)=0

Lim (5x²-8x-4)/(x-2)

X=>2

Lim (5x²+2x-10x-4)/(x-2)

X=>2

Lim (x(5x+2)-2(5x+2)/(x-2)

X=>2

Lim (5x+2)(x-2)/(x-2)

X=>2

Lim (5x+2)

X=>2

Lim 5*2+2

X=>2

Lim =12