Divide 75 / 3 = ? Q. √7 + 2√10 = ?
Q. √7 + 2√10 = ? Option: (A) √5 + √2 | (B) √3 + √2 | (C) √6 + 1 | (D) 2 + √5
Soln
Trick
Find two numbers whose: Sum = 7, Product = 10
Numbers are: 5 and 2
Therefore √7 + 2√10 = √5 + √2
Ans: √5 + √2
Q. √7 + 2√10 = ? Option: (A) √5 + √2 | (B) √3 + √2 | (C) √6 + 1 | (D) 2 + √5
Soln
Trick
Find two numbers whose: Sum = 7, Product = 10
Numbers are: 5 and 2
Therefore √7 + 2√10 = √5 + √2
Ans: √5 + √2