a)
b)
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=![3 + 2\sqrt{2} + 3 - 2\sqrt{2} - 2\sqrt{(3+2\sqrt{2})(3-2\sqrt{2})}= 6 - 2 = 4 3 + 2\sqrt{2} + 3 - 2\sqrt{2} - 2\sqrt{(3+2\sqrt{2})(3-2\sqrt{2})}= 6 - 2 = 4](https://tex.z-dn.net/?f=3+%2B+2%5Csqrt%7B2%7D+%2B+3+-+2%5Csqrt%7B2%7D+-+2%5Csqrt%7B%283%2B2%5Csqrt%7B2%7D%29%283-2%5Csqrt%7B2%7D%29%7D%3D+6+-+2+%3D+4)