1.Oblicz x-y
w załączniku w odpowiedzi może być np. pierwiastek 10 stopnia z iluś
namalowałem w paincie żeby było bardziej zrozumiałe
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a)
¹⁰√x = 2¹⁰√3
¹⁰√x = ¹⁰√(2¹⁰ * 3)
x = 2^10 * 3
x = 1024 * 3
x = 3 072
√y = 10√30
√y = √(30 * 10²)
√y = √(30 * 100)
y = 3 000
x - y = 3 072 - 3 000 = 72
b)
⁵√x = 2⁵√7
⁵√x = ⁵√(7 * 2⁵)
x = 7 * 32
x = 224
√y = 5√7
√y = √(7 * 5²)
y = 7 * 25
y = 175
x - y = 224 - 175 = 49
Oblicz x-y
a)
¹⁰√x = 2¹⁰√3 I()¹⁰ , √y = 10√30 I()²
x = 3·2¹⁰ , y = 30·10² = 3·10³
x-y = 3·2¹⁰ - 3·10³ = 3(2¹⁰ - 10³) = 3(1024-1000) = 3·24 = 72
x-y = 72
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b)
⁵√x = 2⁵√7 I()⁵ , √y = 5√7 I()²
x = 7·2⁵ , y = 7·5²
x-y = 7·2⁵ - 7·5² = 7(2⁵ - 5²) = 7(32-25) = 7·7 = 49
x-y = 49
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