Question

$9 \sqrt{5 } - 4 \sqrt{5 } + \sqrt{125}$
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Answer 1

Answer:

22.36

Explanation:

9√5 - 4√5 + √125

= 9√5 - 4√5 + √5×5×5

= 9√5 - 4√5 + 5√5

= √5 [ 9 - 4 + 5 ]

=10√5

=10× 2.236

=22.36