(221)2−(121)2=

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$(2 \frac{1}{2})^{2} - (1 \frac{1}{2})^{2} =$

C $3\frac12$

D $4\frac12$

Answer:

$(2 \frac{1}{2})^{2} - (1 \frac{1}{2})^{2}$

$(\frac{5}{2})^{2} - (\frac{3}{2})^{2}$

$\frac{25}{4} - \frac{9}{4}$

$= \frac{25 - 9}{4}$

$\frac{16}{4}$

$= 4$

Related Questions:

$100\frac3{11}$ ന് തുല്യമായ ഭിന്ന സംഖ്യ രൂപം ഏത്

Simplify:

$(\frac{1-1}{10})(\frac{1-1}{11})(\frac{1-1}{12})-(\frac{1-1}{99})(\frac{1-1}{100})=?$

$\frac{1}{2}+\frac{1}{4}+\frac{1}{2}+\frac{3}{4}$ എത്ര ?