Question

calcule as somas algebricas 4√125 - 3√45

Answer 1

$4 \sqrt{125} -3 \sqrt{45}$

$4 \sqrt{ 5*5^{2} } -3 \sqrt{5* 3^{2} }$

$20 \sqrt{ 5 } -9 \sqrt{5 }$

$11 \sqrt{5}$