The value of $(0.9)^{2} - (0.6)^{2}$ is

0.54

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- 0.54

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- 0.45

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0.45

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Solution

The correct option is D
0.45

$(0.9)^{2} - (0.6)^{2} = (0.9 + 0.6) (0.9 - 0.6)$
$= (1.5) (0.3)$
$= 0.45$

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Similar questions

The value of ${0.6}^{2}$ is

\frac{(0.3)^{\frac{1}{3}} {(\frac{1}{27})}^{\frac{1}{4}} (9)^{\frac{1}{6}} (0.81)^{\frac{2}{3}}}{(0.9)^{\frac{2}{3}} (3)^{- \frac{1}{2}} {(\frac{1}{3})}^{- 2} (243)^{- \frac{1}{4}}}

\frac{(0.3)^{\frac{1}{3}} {(\frac{1}{27})}^{\frac{1}{4}} (9)^{\frac{1}{6}} (0.81)^{\frac{2}{3}}}{(0.9)^{\frac{2}{3}} (3)^{- \frac{1}{2}} {(\frac{1}{3})}^{- 2} (243)^{- \frac{1}{4}}}

(- 3)^{2}

(- 7)^{2}

(- 0.3)^{2}

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

{(- \frac{3}{4})}^{2}

(- 0.6)^{2}

? - (0.6)^{2} = (0.7)^{2} \div 0.35

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