Question:
<p>A quadratic polynomial having only zero (-2) is</p>
<p style="display:inline"><span class="math-tex">\((x-2)^{2}\)</span></p>
<p style="display:inline"><span class="math-tex">\(x^{2}-2\)</span></p>
<p style="display:inline"><span class="math-tex">\(x^{2}+2 x\)</span></p>
<p style="display:inline"><span class="math-tex">\((x+2)^{2}\)</span></p>
Step-by-Step Solution
Key Concept: A quadratic polynomial with exactly one zero must have that root repeated, meaning the polynomial is a perfect square of the form (x - r)^2.
<p><span class="math-tex">\((x+2)^{2}\)</span></p>
Correct Answer: D