Question

Simplify : √72 + √800 − √18

Answer 1

Step-by-step explanation:

GIVEN,

√72+√800-√18

√72=8.48

√800=28.28

√18=4.24

8.48+28.28-4.24

32.52

I HOPE U MAY UNDERSTAND

Answer 2

$\sqrt{72} = \sqrt{2 \times 2 \times 2 \times 3 \times 3 } \\ \: \: \: \: \: \: \: \: \: = 6\sqrt{2} \\ \sqrt{800} = \sqrt{2 \times 2 \times 2 \times 2 \times 2 \times 5 \times 5} \\ \: \: \: \: \: \: \: \: \: \: \: \: = 20 \sqrt{2} \\ \sqrt{18} = \sqrt{2 \times 3 \times 3} = 3 \sqrt{2} \\ according \: to \: question$

$= \sqrt{72} + \sqrt{800} - \sqrt{18 } \\ = 6 \sqrt{2} + 20 \sqrt{2} - 3 \sqrt{2} \\ = 26 \sqrt{2} - 3 \sqrt{2} \\ = 23 \sqrt{2}$

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