This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.

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Hatua ya 1: Rahisisha namba ya juu (numerator). Namba ya juu ni . Tunaweza kuandika upya kama . Ili kuweka katika vigawo, tunatafuta namba mbili zinazozidisha na kutoa -2 na kujumlisha na kutoa 1. Namba hizo ni 2 na -1. Hivyo, . Kwa hiyo, . Tunaweza pia kuandika hii kama .
Hatua ya 2: Rahisisha namba ya chini (denominator). Namba ya chini ni . Tunatafuta namba mbili zinazozidisha na kutoa na kujumlisha na kutoa -2. Namba hizo ni -3 na 1. Andika upya namba ya kati: . Weka katika vigawo kwa kupanga: .
Hatua ya 3: Rahisisha sehemu. Sasa tuna: Kumbuka kuwa ni kigawo cha kawaida katika namba ya juu na namba ya chini. Tunaweza kukifuta, tukizingatia kuwa . Jibu lililorahisishwa ni: \frac{-x-2{3x+1}}
Hatua ya 4: Tatua kwa X katika kwa . Kwanza, andika upya mlinganyo: Tunajua kwamba . Tumia utambulisho huu kwa upande wa kulia: Sasa mlinganyo unakuwa: Kwa , suluhisho za jumla ni au , ambapo ni namba kamili.
Kesi ya 1: Jumlisha pande zote mbili: Gawanya kwa 3: Kwa , . Hii iko ndani ya masafa . Kwa , . Hii iko nje ya masafa.
Kesi ya 2: Toa pande zote mbili: Kwa , . Hii iko ndani ya masafa . Kwa , . Hii iko nje ya masafa.
Kwa hiyo, thamani za katika masafa yaliyotolewa ni: x = 40^\circ \text{ au x = 60^\circ}
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Hatua ya 1: Rahisisha namba ya juu (numerator). Namba ya juu ni 2-x-x^2.
This mathematics problem involves applying core mathematical principles and formulas. Below you will find a complete step-by-step solution with detailed explanations for each step, helping you understand not just the answer but the method behind it.