数千道详细的逐步解答。查找类似题目，练习并提升技能。
一个长方形花园的周长为32米,面积为51平方米。求花园的长和宽。 解方程: 14x² - 28x + 108 = 0
derivative of f(x) = 10x³ - 9x² - 2x
đạo hàm f(x) = 7x³ + 9x² - 3x
hệ phương trình 4x + 2y = 6, x - 4y = 10
system of equations x + 3y = 15, 4x - 2y = 6
Calculate the combination C(12, 3)
解对数方程 log_3(x) = 2
5x² - 6x + 10 = 0
5x² - 14x - 18 = 0
Find the geometric interpretation of |z - (3 + 4i)| = 4 in the complex plane.
方程 x² - 4x + 3 = 0 有两个实根 x₁, x₂。求 x₁ + x₂ 和 x₁·x₂(Vi-et 定理)。
Solve: x^4 + -8x² + 28 = 0
Find the intervals where f(x) = 4x³ - 9x² + 9x is increasing and decreasing.
Tìm khoảng đồng biến, nghịch biến của hàm số y = 5x³ - 2x² + 10x
polar form 10+20i
求目标函数 z = 5x + 5y 的最大值,约束条件: x + y ≤ 20, x ≥ 0, y ≥ 0
Solve the inequality: 3x + 14 > 0
đạo hàm f(x) = 9x³ + 7x² + 3x
derivative of f(x) = 2x³ - x² - 9x
derivative of f(x) = 7x³ + 6x² - 6x
trùng phương x^4 + -3x² + 48 = 0
Solve the quadratic equation: 5x² + 5x - 10 = 0
Solve the quadratic equation: 17x² + 95x - 32 = 0
求目标函数 z = 3x + 8y 的最大值,约束条件: x + y ≤ 18, x ≥ 0, y ≥ 0