Question 71

Simplify: $$(0.3 \times 0.3 + 0.01) \times (0.1 \times 0.1 + 0.09)$$

Solution

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$$(0.3 \times 0.3 + 0.01) \times (0.1 \times 0.1 + 0.09)$$

apply bodmass rule before that solve bracket 

$$(0.3 \times 0.3 + 0.01)$$

$$(0.09 + 0.01)$$

0.1

$$(0.1 \times 0.1 + 0.09)$$

$$(0.01 + 0.09)$$

0.1 

$$0.1\times 0.1=0.01= \frac{1}{100}$$

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