Question

0,4$sqrt{10} * sqrt{250} + sqrt{169}$ =?

Answer 1

$sqrt{10*250} + sqrt{169} =50+13=63$

Answer 2

√ 10 * √ 250 + √ 169 =  ( √ 10 * 250 ) + 13 = ( √ 2500 )  + 13 = 50 + 13 = 63