Question

please answer fast...

Answer 1

Use Square Root method :

1 ) Take the square root of 16

= √ 16 = √ ( 4 × 4 ) = 4

Take the square root of 9

= √ 9 = √ ( 3 × 3 ) = 3

Now, Multiply both the results

= 4 × 3 = 12



2 ) Take the square root of 28

= √ 28 = √ ( 2 × 2 × 7 ) = 2 √ 7

Take the square root of 7

= √ 7

Now, Multiply both the results

= 2 √ 7 × √ 7 = 2 × 7 = 14



3 ) Take the square root of 25

= √ 25 = √ ( 5 × 5 ) = 5

Take the square root of 16

= √ 16 = √ ( 4 × 4 ) = 4

Now, Multiply both the results

= 5 × 4 = 20

Option B. is correct.

^^"