Tolong yang A dan D saja

Tolong yang A dan D saja

A.

$sf sqrt{12} + sqrt{27} =$

$sf = sqrt{ {2}^{2} times 3} + sqrt{ {3}^{2} times {3} }$

$sf = sqrt{ {2}^{2} } sqrt{3} + sqrt{ {3}^{2} } sqrt{3}$

$sf = 2 sqrt{3} + 3 sqrt{3}$

$sf =( 2 + 3 )sqrt{3}$

$sf = 5 sqrt{3}$

– – – – – – – – – – – – – – – – –

$sf2 sqrt{3} + 3 sqrt{48} - 4 sqrt{12} =$

$sf = 2 sqrt{3} + 12 sqrt{3} - 8 sqrt{3}$

$sf = (2 + 12 - 8 )sqrt{3}$

$sf = 6 sqrt{3}$