Simplify 6+3 square root of 5-9 square root of 5-4

$6 + 3 \sqrt{5} - 9 \sqrt{5} - 4$

Step 1

Subtract $4$ from $6$ .

$2 + 3 \sqrt{5} - 9 \sqrt{5}$

Step 2

Subtract $9 \sqrt{5}$ from $3 \sqrt{5}$ .

$2 - 6 \sqrt{5}$

Step 3

The result can be shown in multiple forms.

Exact Form:

$2 - 6 \sqrt{5}$

Decimal Form:

$- 11.41640786 \dots$