Question

Please help me it was to be done fast

Answer 1

$\sqrt12 * \sqrt15$

= $\sqrt{2*2*3}*\sqrt{15}$

= $2\sqrt{3}*\sqrt{15}$

= $2\sqrt{3*15}$

= $2\sqrt{3*3*5}$

= $6\sqrt{5}$

Answer 2

Answer:  6√5

Step-by-step explanation:

√12 × √15 = √3×√4×√3×√5

                =  √3×√3×√4×√5

                 = 3×2×√5

                = 6√5