Question

3√3(√21-√12)

tell
pls tell​

Answer 1

Answer:

$3√3(√21-√12) \\ </p><p> = 3 \sqrt{3} ( \sqrt{3 \times 7} - 2 \sqrt{3} ) \\ = 3 \sqrt{3 } \times \sqrt{3 \times 7} - 3 \sqrt{3} \times 2 \sqrt{3} \\ = 9 \sqrt{7 } - 18$