4x³ - 2x²+ 1 = 0 D. 1/x + 2 = 0 相关知识点: 试题来源: 解析 B。解析:二次方程(quadratic equation)的一般形式是ax²+bx + c = 0(a≠0),选项B符合这个形式。选项A是一次方程。选项C是三次方程,因为最高次项是x³。选项D是分式方程,不是二次方程的形式。反馈 收藏 ...
Which of the following is the equation of a quadratic function with a vertex at (2,3) and opening upward? A. y = (x - 2)² + 3 B. y = (x + 2)² + 3 C. y = -(x - 2)² + 3 D. y = -(x + 2)² + 3 相关知识点: ...
Which of the following is a quadratic equations? x2+ 2x + 11 = 0is in the form of the general quadratic equation. What is the nature of the root of quadratic equation 5x2 4x 5? Hence the both roots arenot real. Which constant should be added and subtracted to solve the quadratic eq...
Find the value of the discriminant(Δ)in each of the following quadratic equations : y2−3y−10=0 View Solution Check whether the following are quadratic equations : y(8y + 5) =y2+3 View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Clas...
Decide which of the following are quadratic equations : y2=5y−10 View Solution Doubtnut is No.1 Study App and Learning App with Instant Video Solutions for NCERT Class 6, Class 7, Class 8, Class 9, Class 10, Class 11 and Class 12, IIT JEE prep, NEET preparation and CBSE, UP Boar...
结果1 题目 Using the Quadratic Formula, which of the following is the solution to the quadratic equation 3x^2+5x-12=0? ( ) A. x=-3, x=43 B. x=3, x=43 C. x=3, x=-43 D. x=-3, x=-43 相关知识点: 试题来源: 解析 A 反馈 收藏 ...
我喜欢eatting苹果香蕉eggpiant鸡,并且…我喜欢音乐唱奔跑pinting的… I经常说: 书是我的好frieng,我喜欢! Whate是我?是,我的名字是Lv Enhui[translate] aAccording to the passage ,which of the following has changed the most in the last 500 years? 根据段落,以下改变了多数在最近500年?[translate]...
In this case, the slope is m. So, the equation that has the greatest slope has the greatest rate of change. Answer and Explanation: We wish to know which of the given equations from the options has the greatest rate of change in the following line...
百度试题 结果1 题目MULTIPLE CHOICE Which quadratic equation has the solutions x=(-9±√(81-56))/4 A 2x^2+9x-7=0③ 2x^2-9x+7=0⊙4x^2+9x+14=0 2x^2+9x+7=0 相关知识点: 试题来源: 解析 D 反馈 收藏
Which of the following equations is an example of direct variation? I. f(x)=xyz II. f(x)=x3 III. f(x)=3x A. III only B. I only C. I and II only D. II only Direction Variation: Between two variables x ...