simplify : sqrt (12) - sqrt (27)
a) - sqrt(15)
b) -15 sqrt (3)
c)- sqrt (3)
d) -5 sqrt (3)
√12 -√27
= 2√3 - 3√3
= ???
12-5
To simplify the expression: √12 - √27, we need to use the properties of square roots.
Step 1: Simplify the square roots individually.
√12 = 2√3
√27 = 3√3
Step 2: Substitute the simplified values back into the expression.
2√3 - 3√3
Step 3: Combine like terms.
(2 - 3)√3
-√3
Therefore, the simplified expression is -√3.
So, the correct answer is c) -√3.