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Question
Root (72) + root (800) - root (18)
Root (72) + root (800) - root (18)
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Solution
√72 = √36×2 = 6√2
√800 = √400×2 = 20√2
√18 = √9×2 =3√2
√72+√800-√18
= √36×2+√400×2-√9×2
= 6√2 + 20√2-3√2
= [6+20-3](√2)
= [26- 3](√2)
= 23√2
The answer is 23√2
√800 = √400×2 = 20√2
√18 = √9×2 =3√2
√72+√800-√18
= √36×2+√400×2-√9×2
= 6√2 + 20√2-3√2
= [6+20-3](√2)
= [26- 3](√2)
= 23√2
The answer is 23√2
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