1.

1). 3.52). 73). 4.54). 9

Answer»

We can WRITE,

⇒ √128 = √(26 × 2) = 23√2 = 8√2

⇒ √72 = √(22 × 32 × 2) = 2 × 3√2 = 6√2

⇒ √32 = √(24 × 2) = 22 × √2 = 4√2

Hence,

⇒ (√128 + √72)/√32

= (8√2 + 6√2)/4√2

= 14√2/4√2

= 7/2

= 3.5


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