simplify -3\sqrt{20}-\sqrt{5}
-3√20 - √5
First, simplify the square roots:
-3√20 = -3 * √(4*5) = -3 * √4 * √5 = -3 * 2√5 = -6√5
Now, we have:
-6√5 - √5
Combine like terms:
-6√5 - √5 = -7√5
Therefore, -3√20 - √5 simplifies to -7√5.
First, simplify the square roots:
-3√20 = -3 * √(4*5) = -3 * √4 * √5 = -3 * 2√5 = -6√5
Now, we have:
-6√5 - √5
Combine like terms:
-6√5 - √5 = -7√5
Therefore, -3√20 - √5 simplifies to -7√5.