`x^2=x^5`
`⇔x^2-x^5=0`
`⇔x^2(1-x^3)=0`
`⇔`\(\left[ \begin{array}{l}x^2=0\\1-x^3=0\end{array} \right.\)
`⇔`\(\left[ \begin{array}{l}x=0\\x=1\end{array} \right.\)
Vậy `x∈{0;1}`
Đáp án:
Giải thích các bước giải:
`x^2 = x^5`
`→ x^5 - x^2 = 0`
`→ x^2 . ( x^3 - 1 ) = 0`
`→ x^2 = 0` hoặc `x^3 - 1 = 0`
`→ x = 0` hoặc `x^3 = 1`
`→ x = 0` hoặc `x = 1`
Vậy `x ∈ { 0; 1 }`
Vẽ anime or calli : '' I'm Boy '' P/s : Người ơi gặp gỡ làm chi Trăm năm biết có duyên gì hay không. ?
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vẽ cho mk đậu mầm cho em với em cảm ơn trước ≥ ω ≤
Giúp mình giải bài này với! Mình cảm ơn nhìu ạ! Ném một vật thẳng đứng lên cao với vận tốc ban đầu 10m/s từ độ cao 5m so với mặt đất. Lấy g=10m/s^2. a) Tính độ cao cực đại b) Tính độ cao của vật khi vận tốc giảm đi một nửa so với vận tốc đầu c) Vật có vận tốc bao nhiêu khi độ cao bằng 3/2 độ cao ban đầu d) Tính vận tốc khi vật vừa chạm đất e) Trong giây cuối cùng, động năng của vật tăng thêm một lượng là bao nhiêu?
1 you lost the keys. Have you found them?(that) -> have 2. They said something.Did you hear it? (What) Did you hear ...
Giúp mình câu 1,2,3,4,5 vote 50 cần gấp
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vẽ lô gô D3K44 đô lương 3 hứa vote 5 sao
30. Choose the best answer among A, B, C or D to complete the following sentence. - Mary: “That’s a very nice skirt you are wearing.” - Julia: “_________.” A. That’s nice B. I like it C. That’s all right D. I’m glad you like it 31. Choose the best answer that is made from the given cues. enough / that / money / car / we / to / didn’t / buy / have A. We have didn’t enough money to buy that car. B. We didn’t have enough that money to buy car. C. We didn’t have enough money to buy that car. D. We didn’t have money enough to buy that car. 32. Choose the best answer among A, B, C or D to complete the following sentence. Let’s have a drink, _________? A. shall we B. will we C. shall you D. do we 33. Choose the underlined word or phrase that is in correct. The weather was bad because we had to cancel our picnic. A B C D 34. Choose the sentence which has the same meaning as the given one. We have learnt Enlish for 4 years. A. We started to learn English 4 years. B. We started learning English 4 years ago. C. We have learned to start English 4 years. D. We have started to learn English 4 years ago. 35. Choose the best answer that is made from the given cues. afternoon / washes / every / he / his / Sunday / car A. He every washes his car Sunday afternoon. B. He washes his car Sunday every afternoon. C. He washes his car every afternoon Sunday. D. He washes his car every Sunday afternoon. 36. Choose the underlined word or phrase that is in correct. He lived with his grandmother since he was ten. A B C D 37. Choose the best answer that is made from the given cues. What / favorite / TV / programs? A. What are your favorite TV programs? B. What is the your favorite TV programs? C. What are your favorite programs TV? D. What is your favorite TV programs? 38. Choose the word whose underlined part is pronounced differently from the rest. A. arranged B. wanted C. climbed D. stayed 39. Choose the underlined word or phrase that is in correct. Nam asked me if I want to speak to a foreigner. A B C D 40. Choose the best answer among A, B, C or D to complete the following sentence. Water _________at 100 degrees Celsius. A. boiling B. boil C. is boiling D. boils 41. Choose the underlined word or phrase that is in correct. He was punished because he did the test careless yesterday. A B C D
Mn giúp mình 1 câu này với,mình cảm ơn
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