What is the limit as x approaches 2 of-x+2x^2-1 ?

The limit as x approaches 2 of-x+2x^2-1 is 5

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limit as x approaches 2 of-x+2x^2-1

x \to 2 lim (- x + 2 x^{2} - 1)

5

Solution steps

x \to 2 lim (- x + 2 x^{2} - 1)

Plug in the value

x = 2

= - 2 + 2 \cdot 2^{2} - 1

Simplify

- 2 + 2 \cdot 2^{2} - 1 : 5

= 5

\frac{10}{s ^{2} + 2 s + 10}

\frac{d}{d x} ((\frac{1}{x ^{2}})^{t a n (x)})

\frac{3}{( 4 x + 1 )}

y^{^{'}} + (\frac{2}{t}) y = \frac{cos ( t )}{t ^{2}}

\frac{\partial}{\partial x} (4 x^{8} y^{6} + 6 x^{7} y^{5})

What is the limit as x approaches 2 of-x+2x^2-1 ?
The limit as x approaches 2 of-x+2x^2-1 is 5