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$(x + 5)^2$ का प्रसार कीजिए।

A$x^2 + 10x + 10$
B$x^2 + 5x + 25$
C$x^2 + 25$
D$x^2 + 10x + 25$
Answer & Solution
Correct answer: D. $x^2 + 10x + 25$
$(a+b)^2 = a^2 + 2ab + b^2$. $a=x, b=5$ रखने पर: $x^2 + 10x + 25$ प्राप्त होता है।
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