Question

simplify : 4√5-9√5+√125​

Answer 1

Answer:

0

Step-by-step explanation:

4√5 - 9√5 + √125

= 4√5 - 9√5 + √(25 × 5)

= 4√5 - 9√5 + √25×√5

= 4√5 - 9√5 + 5√5

= ( 4 - 9 + 5 )√5

= 0√5

= 0

Answer 2

$4 \sqrt{5} - 9 \sqrt{5} + \sqrt{125} \\ 4 \sqrt{5} - 9 \sqrt{5} + 5 \sqrt{5} \\ 9 \sqrt{5} - 9 \sqrt{5} \\ 0 \sqrt{5}$