√(3x(5y + 7z)) + √(5y(7z + 3x)) + √(7z(3x + 5y))
You asked:
MathBot Answer:
Evaluated
\(\displaystyle \sqrt{3 \cdot x \cdot \left(5 y + 7 z\right)} + \sqrt{5 \cdot y \cdot \left(7 z + 3 x\right)} + \sqrt{7 \cdot z \cdot \left(3 x + 5 y\right)} = \sqrt{3} \sqrt{x \left(5 y + 7 z\right)} + \sqrt{5} \sqrt{y \left(3 x + 7 z\right)} + \sqrt{7} \sqrt{z \left(3 x + 5 y\right)} \)
Expanded
\[\sqrt{3 \cdot x \cdot \left(5 y + 7 z\right)} + \sqrt{5 \cdot y \cdot \left(7 z + 3 x\right)} + \sqrt{7 \cdot z \cdot \left(3 x + 5 y\right)} = \sqrt{15 x y + 21 x z} + \sqrt{15 x y + 35 y z} + \sqrt{21 x z + 35 y z}\]
Factored
\[\sqrt{3 \cdot x \cdot \left(5 y + 7 z\right)} + \sqrt{5 \cdot y \cdot \left(7 z + 3 x\right)} + \sqrt{7 \cdot z \cdot \left(3 x + 5 y\right)} = \sqrt{5} \sqrt{3 x y + 7 y z} + \sqrt{3} \sqrt{5 x y + 7 x z} + \sqrt{7} \sqrt{3 x z + 5 y z}\]