Question

ii) 4root-4+5root-9-3root-16​

Answer 1

Answer:

11

Step-by-step explanation:

$4 \sqrt{ - 4} + 5 \sqrt{ - 9} - 3 \sqrt{ - 16} \\ = 4 \times 2 + 5 \times 3 - 3 \times 4 \\ = 8 + 15 - 12 \\ = 11$

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