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: ...
百度试题 结果1 题目Which quadratic equation has exactly one real root? ( ) A. -9x^2-6x+1=0 B. 9x^2-6x-1=0 C. 9x^2-6x+1=0 D. 9x^2+6x-1=0 相关知识点: 试题来源: 解析 C 反馈 收藏
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
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 ...
What is the constant proportionality in the equation y = 0.41x? How does standard variation equal 0? Find the constant of variation for the quadratic variation. 6y = 4x^2. (a) 4/9 (b) 2/3 (c) -2 (d) 3/2 Find the ...
According to the problem, coefficients of the required quadratic equation arereal and its one root is -2 + i.We know in a quadratic with real coefficients imaginary roots occur inconjugate pairs).Since equation has rational coefficients, the other root is -2 - iNow, the sum of the roots ...
awrinkle reducer 皱痕还原剂[translate] asolve this quadratic equation and hence find the pairs (x,y) for which the simultaneous equations are satisfied 解决这个二次方程并且发现对(x, y)同时等式是满意的[translate]
b and c are constants, and state the coordinates o f the vertex o f the curve.[4]The functions f and g are defined for all real values o f x by f(x)=2x^2-3x and g(x)=3x+k,where k is a constant.(iii) Find the value o f k for which the equation gf(x)=0 h...
aWe can now solve another type of quadratic equation. In fact, use this result to solve x2+ 10x = 39, an equation which we can rewrite as (10 + x)x = 39. Taking b = 10, substitute that value for b and the value 39 for (10 + x)x into the algebraic formula for proposition ...
aquadratic equation 二次方程[translate] a很开心跟你聊天 Chats very happy with you[translate] a需要安排出国培训 Needs to arrange study abroad training[translate] a有些朋友问我借钱,可她又总是忘记还 Some friends asked I lend money, but she always forgets also[translate] ...