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Q. 3. Find the value of the following expressions, when $x=-1$ :

(iii) $x^{2}+2x+1$

Answers (1)

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$\\x^2 + 2x + 1 \\= ( -1 )^2 + 2 \times ( -1 ) + 1 \\= 1 - 2 + 2 \\= 0$

If x = -1 the value of x² + 2x + 1 = 0

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