ZAD 1. √75+√32+√50+√20 ZAD 2. | x - 3 | < 2
ZAD 1.
√75 + √32 + √50 + √20 =
√(25x3) + √(16x2) + √(25x2) + √(4x5) =
5√3 + 4√2 + 5√2 + 2√5 = 5√3 + 9√2 + 2√5
ZAD 2.
| x - 3 | < 2
-2 < x - 3 < 2
-2 + 3 < x 2 + 3
1 < x < 5
odp. x ∈ (1, 5)
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ZAD 1.
√75 + √32 + √50 + √20 =
√(25x3) + √(16x2) + √(25x2) + √(4x5) =
5√3 + 4√2 + 5√2 + 2√5 = 5√3 + 9√2 + 2√5
ZAD 2.
| x - 3 | < 2
-2 < x - 3 < 2
-2 + 3 < x 2 + 3
1 < x < 5
odp. x ∈ (1, 5)