Use identity to get the product of $(1.1 m - 0.4) (1.1 m + 0.4)$

1.21 m - 0.16

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m^{2} - 0.16

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1.21 m^{2} + 0.16

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1.21 m^{2} - 0.16

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Solution

The correct option is C $1.21 m^{2} - 0.16$
$(1.1 m - 0.4) (1.1 m + 0.4)$
$= (1.1 m)^{2} - (0.4)^{2}$ [Using: $(a - b) (a + b) = a^{2} - b^{2}$ ]
$= 1.21 m^{2} - 0.16$

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Similar questions

Use a suitable identity to get each of the following products.

(1.1 m - 0.4) (1.1 m + 0.4)

(1.1 m - 0.4) (1.1 m + 0.4)

Question 1(v)
Use a suitable identity to get each of the following products:
(1.1m – 0.4 ) (1.1m + 0.4 )

\sqrt{0.16}

(0.16)^{2}

0.1 ¯ ¯ ¯ 6

\sqrt{\frac{0.16}{0.4}}

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