Q20 of 51 Page 3

The positive square of 7 + is

7 + √48


= 7 + √(16×3) = 7 + 4√3 ( try to break it in form of (a+b)2)


= (2)2 + (√3)2 + 2×2×√3 = (2+√3)2 = (2+√3) (2+√3).

More from this chapter

All 51 →
18

If =1.4142, then is equal to

 19

If =1.414, then the value of upto three place of decimal is

 21

is equal to

 22

The value of is