akar 32 dikurang akar 242 ditambah akar 72

[tex] \sqrt{32} - \sqrt{242} + \sqrt{72} \\ = 4\sqrt{2} - 11 \sqrt{2} + 6 \sqrt{2} \\ =( 4 - 11 + 6) \sqrt{2} \\ = - 1 \sqrt{2} [/tex]