Surds and radicals
Number systems · Mathematics
Study notes
Q: Simplify √72 + √18 − √8. Step 1: √72 = √(36×2) = 6√2. Step 2: √18 = √(9×2) = 3√2. Step 3: √8 = √(4×2) = 2√2. Step 4: 6√2 + 3√2 − 2√2 = 7√2.
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Number systems · Mathematics
Q: Simplify √72 + √18 − √8. Step 1: √72 = √(36×2) = 6√2. Step 2: √18 = √(9×2) = 3√2. Step 3: √8 = √(4×2) = 2√2. Step 4: 6√2 + 3√2 − 2√2 = 7√2.