Use the product rule to multiply. Assume all variables represent positive real numbers.
-$\sqrt { 6 } \cdot \sqrt { 7 }$
A) $\sqrt { 42 }$
B) $\sqrt { 13 }$
C) 42
D) $\sqrt { 6 + 7 }$

Question

Quizplus · Accepted Answer

The product rule for square roots states that $\sqrt{a} \cdot \sqrt{b} = \sqrt{ab}$. Applying this rule here, we get $\sqrt{6} \cdot \sqrt{7} = \sqrt{6 \cdot 7} = \sqrt{42}$.

Use the Product Rule to Multiply 6⋅7\sqrt { 6 } \cdot \sqrt { 7 }6​⋅7​

Use the Product Rule to Multiply $\sqrt { 6 } \cdot \sqrt { 7 }$