przedstaw w postaci a√2 , gdzie a nalezy C: -2√98 - 3√50 + 5√72
...= -2√(49*2) - 3√(25*2) + 5√(36*2)=
= -2 * 7√2 - 3* 5√2 + 5*6√2 =
= -14√2 - 15√2 + 30√2 = 1√2
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...= -2√(49*2) - 3√(25*2) + 5√(36*2)=
= -2 * 7√2 - 3* 5√2 + 5*6√2 =
= -14√2 - 15√2 + 30√2 = 1√2