Nilai dari 3√2-5√18+2√98-√50 =

[tex] = 3 \sqrt{2} - 5 \sqrt{9} \sqrt{2} + 2 \sqrt{49} \sqrt{2} - \sqrt{25} \sqrt{2} [/tex]
[tex] = 3 \sqrt{2} - (5 \times 3 \sqrt{2} ) + (2 \times 7 \sqrt{2} ) - (5 \sqrt{2} )[/tex]
[tex] = 3 \sqrt{2 } - 15 \sqrt{2} + 14 \sqrt{2} - 5 \sqrt{2} [/tex]
[tex] = - 3 \sqrt{2} [/tex]