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(2)低级代数(Elementary Algebra): 考核变量表达式(use variables to express relationships)、代数表达式的代入法(substitute the value of a variable in an expression)、二次方程式的因式分化(solve simple quadratic equations by factoring)、解含有一个变量的线性不等式 (solve linear inequalities with one ...
(1)算术(Pre-Algebra): 考察的內容为高中以前的数学常识。比方,分数(fraction)、小数(decimal)、整数(integer)、平方根(square root)、比率 (ratio)、百分比(percent)、整数的倍数(multiple)和因数(factor)、绝对值(absolute value)、一次方程式(linear equations with one variable)、几率(probability)等。 (2)...
(b)Use algebra to solve the equation3^(2x)-9(3^x)+18=0giving your answers to 2 decimal places where appropriate. 相关知识点: 试题来源: 解析 (b) (3^x)^2-9(3^x)+18=0 Forms a quadratic of the correct form in or 3 or in "y" where "y"=3or even in x y=3^x⇒y^...
(2)低级代数(Elementary Algebra): 考核变量表达式(use variables to express relationships)、代数表达式的代入法(substitute the value of a variable in an expression)、二次方程式的因式分化(solve simple quadratic equations by factoring)、解含有一个变量的线性不等式 (solve linear inequalities with one ...
Connections In Algebra In algebra, we study relationships like this: Working out 172 directly is cumbersome. But we can simplify it to: In the computer era, sure, we can just crunch 172 directly. The important aspect is realizing that (a+b)2 can be broken into simpler ingredients: a2,b2...
With more complex equations, this is where you would combine like terms and perform any other simplifying possible. But in this case you've already found the value of your variable: x = -4. TL;DR (Too Long; Didn't Read) The other really handy trick in algebra is memorizing the standar...