Question

Find the value of f(x) = x2+2x+1 when x = -1.

Answer 1

$\bf \Large \hookrightarrow \: {x}^{2} \: + \: 2x \: + \: 1$

☛ The value of x is -1.

Now , Putting the values of x in equation.

$\bf \large \hookrightarrow \: ( - 1) ^{2} \: + \: 2 \times ( - 1) \: + \: 1 \\ \\ \bf \large \hookrightarrow \:\:1 \: + \: ( - 2) \: + \: 1 \\ \\ \bf \large \hookrightarrow \: \: 2 \: - \: 2 \\ \\ \bf \Large \hookrightarrow \: \: 0$

Value of f(x) is 0.