二加二等于五 - 维基百科，自由的百科全书
网页“二加二等于五”（即2 + 2 = 5）作为一个不证自明的虚假陈述，通常簡潔生動地用于代表一種不合邏輯的闡述，特別是用于代替與邏輯理論相悖的理論闡述。
Mathway | Algebra Problem Solver
网页Free math problem solver answers your algebra homework questions with step-by-step explanations.
2 + 2 = 5 - Wikipedia
网页2 + 2 = 5 or two plus two equals five is a mathematical falsehood which is used as an example of a simple logical error that is obvious to anyone familiar with basic arithmetic. The phrase has been used in various contexts since 1728, and is best known from the 1949 dystopian novel Nineteen Eighty-Four by George Orwell.
二加二等于五 - 百度百科
网页“二加二等于五”（即2 + 2 = 5）有时被简洁生动地用于代表一种不合逻辑的阐述，特别是用于代替与逻辑理论相悖的理论阐述。“它最先广为人知出于英国著名作家乔治·奥威尔的反乌托邦名著《一九八四》（第一部第七章）中。
Basic Calculator
网页2023年10月14日 · Use this basic calculator online for math with addition, subtraction, division and multiplication. The calculator includes functions for square root, percentage, pi, exponents, powers and rounding. How to do repeating operations, higher powers and roots, memory and clear functions for this standard calculator are explained below.
Evaluate 2^5 | Mathway
网页Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.
2^5 - Symbolab
网页Free Scientific calculator - a calculator with advanced features for evaluating exponents, functions, trigonometry and more...
Solve 2^5 | Microsoft Math Solver
网页x→−3lim x2 + 2x − 3x2 − 9. Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.
What is 2/5 as a percent? - Calculatio
网页This calculator will help you find what percentage one number is of another. For example, it can help you find out what percentage is 2 out of 5? (The answer is: 40%). Enter the first number (e.g. '2') and the second number (e.g. '5'). Then hit the 'Calculate' button.
Michał Korch: Can you prove that 2+2=5? | TED Talk
网页Is it possible to prove that 2+2=5? Obviously not -- one is tempted to answer -- because 2+2=4. But what if I tell you that this is much more complex question? We begin our journey with the famous Euclid's Axiom, and going through the infinity, we are getting to examples of some proofs that there is no proof.
跳至内容