Racialize the denominator show work

Q1

I am going to use the of perfects squares. First i write the numbers is its simplest surd by rationalizing it.

Finally, i estimate the result to the nearest hundredths.

Q2

Part 1

√40 = √(4 ×10) = √4×√10 = 2√10 = 2×3.1627 = 6.32

Part 2

√75 = √(25 ×3) = √25 ×√3 = 5√3 = 5×1.732 = 8.66

Part 3

√90 = √(9×10) = √9×√10 = 3√10 = 3×3.1623 = 9.49

Part 4

√245 = √(49×5) = √49×√5 = 7√5 = 7×2.236 = 15.65

Part 5

√450 = √(225×2) = √225 × √2 = 15√2 = 15×1.414 = 21.21

Part 6

√640 = √(64×10) √64×√10 = 8√10 =8×3.162 = 25.30

Part 7

√675 = √(225×3) = √225×√3 = 15√3 = 15×1.732 = 25.98

all it means is function 3