I need help solving this radical operation√(90) - √(40)

asked Mar 16, 2023 105k views

1 vote

I need help solving this radical operation
√(90) - √(40)

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$\begin{gathered} √(90)-√(40)=√(9*10)-√(4*10) \\ \text{ =}√(9)*√(10)-√(4)*√(10) \\ \text{ =3}√(10)-2√(10) \end{gathered}$

taking √10 common,

Jedidja answered Mar 22, 2023

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