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The simplification calculator allows you to take a simple or complex expression and simplify and reduce the expression to it's simplest form. The calculator works for both numbers and expressions containing variables. Step 2: Click the blue arrow to submit and see the result!
An example of a polynomial of a single indeterminate x is x² − 4x + 7. An example with three indeterminates is x³ + 2xyz² − yz + 1.
25 Νοε 2022 · Tìm x, biết 2+4+6+8+...+2x=210. Tìm x: 2 + 4 + 6 + 8 + ... + 2x = 210. Theo dõi
2 Μαρ 2024 · qartuli
2+4+6+8+...+2x=210 +) Ta có : 2.1+2.2+2.3+2.4+...+2x=210 =>2.(1+2+3+...x) =210. 1+2+3+...+x= 210:2. 1+2+3+...+x= 105 (x+1).x:2=105 =>(x+1).x=210 =>15.14=210 +) Vậy x=14
Ta có: 2+4+6+8+.....+2x=210. ⇒ \(2\cdot\left(1+2+3+...+x\right)=2\cdot105\) \(\Rightarrow1+2+3+...+x=105\) \(\Rightarrow\dfrac{x\left(x+1\right)}{2}=105 ...
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