What is sqrt(81)+sqrt(20)-sqrt(45) ?

The solution to sqrt(81)+sqrt(20)-sqrt(45) is 9-sqrt(5)

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simplify sqrt(81)+sqrt(20)-sqrt(45)

simplify

81 + 20 - 45

9 - 5

Decimal Notation

6.76393 \dots

Solution steps

81 + 20 - 45

81 = 9

20 = 25

45 = 35

= 9 + 25 - 35

Add similar elements:

25 - 35 = - 5

= 9 - 5

∣ b ∣ = 0^{2} + 0^{2} + 3^{2}

2 x^{2} + 2 x - 7 = 0

- 47 \cdot 42

(16)^{\frac{5}{2}}

(\frac{3}{4})^{2} - \frac{1}{4} - (- \frac{3}{8})^{2} + (\frac{1}{4})^{3}

What is sqrt(81)+sqrt(20)-sqrt(45) ?
The solution to sqrt(81)+sqrt(20)-sqrt(45) is 9-sqrt(5)