$left( x-2 right)left( x+3 right)$ [latex]left|begin{array}{cc} sum_{i=1}^{n} X_i^2 & sum_{i=1}^{n} X_i Y_i end{array}right|[/latex] Câu 1: Cho hàm số [latex]f(x) = x^2 + 4[/latex]. Khẳng định nào đúng? <br> A. [latex]int{f(x)dx} = frac{2x+C}{2}[/latex] <br> Bài 1: Triển khai các biểu …
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