Simplify: √50 + √18 − √8
Show answer & explanation
Correct answer: B
Explanation
Given:
√50 + √18 − √8
According to the formula:
√(a × b) = √a × √b
√50 = √(25 × 2) = 5√2
√18 = √(9 × 2) = 3√2
√8 = √(4 × 2) = 2√2
⇒ 5√2 + 3√2 − 2√2
= (5 + 3 − 2)√2
= 6√2