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Value of an Algebraic Expression

In the equati...

Question

In the equation $y = x^{2} - 2 x + 2$ , what is the value of $y$ , if the value of $x = - 2$ ?

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Solution

The correct option is D 10
$y = x^{2} - 2 x + 2$ ,
Substituting the value of $x = - 2$ in the above equation, we get,
$y = (- 2)^{2} - 2 (- 2) + 2$
$y = 4 + 4 + 2$
$y = 10$

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