数千道详细的逐步解答。查找类似题目，练习并提升技能。
解方程组 4x + 4y = 20, 5x - y = -3
解方程组 x + 2y = 2, 2x - 5y = -10
解方程组 4x + 2y = 9, x - 4y = -10
hệ phương trình 4x + y = 2, 2x - 5y = -1
system of equations x + 2y = 10, x - 3y = -10
3x² - 9x - 24 = 0
解方程 4x² + 11x + 5 = 0
Solve the quadratic equation: 13x² - 16x - 56 = 0
Giải phương trình: x^4 + -13x² + 49 = 0
求导 f(x) = 10x³ - 6x² + 7x
đạo hàm f(x) = 8x³ + 7x² - 7x
Find the root mean square speed vrms of gas molecules with molar mass M = 28 g/mol at T = 882 K. (R = 8.314 J/(mol·K))
(4x - 10)/(2x + 3) ≥ 0
Find the intervals where f(x) = 3x³ - 2x² + 7x is increasing and decreasing.
Find the intervals where f(x) = 4x³ - 10x² + 10x is increasing and decreasing.
Hòa tan hoàn toàn 3.24 gam kim loại M trong dung dịch HNO3 loãng, thu được 0.896 lít khí NO (đktc) và dung dịch chứa m g
Find the angle between vectors a = (-2, 6) and b = (-9, -6).
Solve the linear equation: 6x - 55 = 0
Solve the linear equation: 52x + 142 = 0
解对数方程 log_2(x) = 5
Find the vertex and axis of symmetry of the parabola y = -1x² + 4x + 2.
A rectangular garden has perimeter 54 m and area 65 m². Find its dimensions. Solve: 7x² - 6x + 10 = 0
Solve: x^4 + -12x² + 9 = 0
đạo hàm f(x) = 2x³ - 5x² + 2x