Question

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Answer 1

Răspuns:

Explicație pas cu pas:

e)

Ix/3 + 1/4I = 3

x/3 + 1/4 = 3

x/3 = 3 - 1/4 = 12/4 - 1/4 = 11/4

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x/3 + 1/4 = -3

x/3 = -3 - 1/4 = -12/4 - 1/4 = -13/4

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g)

I(√2x - √8)/3I = √2

(√2x - √8)/3 = √2

√2x - √8 = 3√2

√2x = 3√2 + √8 = 3√2 + 2√2 = 5√2

x = 5√2 : √2 = 5

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(√2x - √8)/3 = -√2

√2x - √8 = -3√2

√2x = -3√2 + √8 = -3√2 + 2√2 = -√2

x = -√2 : √2 = -1

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h)

I√27x/3 + √12I = 2√3

√27 = 3√3

√27x/3 = 3√3x/3 = √3x

√12 = 2√3

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I√3x + 2√3I = 2√3

√3x + 2√3 = 2√3

√3x = 2√3 - 2√3 = 0

x = 0 : √3 = 0

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√3x + 2√3 = - 2√3

√3x = -2√3 - 2√3 = -4√3

x = -4√3 : √3 = -4

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i)

√45 = 3√5

√5 + x/√5 = 3√5

x/√5 = 3√5 - √5 = 2√5

x = 2√5*√5 = 10

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√5 + x/√5 = -3√5

x/√5 = -3√5 - √5 = -4√5

x = -4√5*√5 = -20