Math, asked by scooby20, 6 months ago

root168 simplyfly the surd​

Answers

Answered by Anonymous
4

 \sqrt{168}  =  \sqrt{2 \times 84}  \\  \\   \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: =  \:  \:  \:  \:  \:  \:  \sqrt{2 \times 2 \times 42}  \\  \\ \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:   =  \sqrt{2 \times 2 \times 2 \times 21}  \\  \\ \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:    \:  \:  \:  \:  \: =  \sqrt{4 \times 2 \times 3 \times 7}  \\  \\  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  = 2 \sqrt{2 \times 3 \times 7}  \\  \\  = 2 \sqrt{42}  \\  \\  hence \\  \\  \sqrt{168}  = 2 \sqrt{42}

Answered by Anonymous
3

Step-by-step explanation:

=

2×84

=

2×2×42

=

2×2×2×21

=

4×2×3×7

=2

2×3×7

=2

42

hence

168

=2

42

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