结果1 题目 What is the equation of the quadratic function with a vertex at (2,-25) and an x-intercept at (7,0)? ( ) A. f(x)=(x-2)(x-7) B. f(x)=(x+2)(x+7) C. f(x)=(x-3)(x+7) D. f(x)=(x+3)(x-7) 相关知识点: 试题来源: 解析 D 反馈 收藏 ...
In general, quadratic equations can be solved using the quadratic formula. That said, when there is no middle term (no value of x with a coefficient), we can simply solve for the square root of the value ofcto find our answer. Answer and Explanation:1 x2+9=0 3i To solve ...
What condition on the values of D,E and F determines whether this a circle?Use this condition to show thatx2 + y2 ¡ 2x ¡ 4y + 3 = 0is a circle and sketch the circle.Does the point (0:4; 3) lie inside,outside or on this circle?Give a reason foryour answer.Problem 2...
9For what values of k,does the quadratic equation in one variable x,x2-4x+k-5=0,satisfy the following?(1)It has two distinct real roots;(2)it has two equal real roots;and (3)it has no real roots.9 For what values of k, does the quadratic equation in one variable x,x- 4x+...
What is the equation for the axis of symmetry of a quadratic function y = 3x² + 6x + 2? A. x = -1 B. x = -2 C. x = -3 D. x = -4 相关知识点: 试题来源: 解析 A。解析:For the function y = 3x² + 6x + 2, a = 3 and b = 6. Using the formula x = -b/...
By Vieta's formulas, the sum of the roots is 2, therefore their average is 1. We know that for an equation ax2+bx+c=0, the sum of the roots is −ba. This means that the sum of the roots for ax2−2ax+b=0 is 2aa, or 2. The average is the sum of the two roots ...
Answer and Explanation:1 The solutions to 3(x- 4)2= 75 arex= -1 andx= 9. To solve this equation, we will make use of the square root property. To do this, we first want... Learn more about this topic: Square Root Property | Overview, Formula & Examples ...
【题目】9 For what values of k, does the quadratic equation in one variable x, x^2-4x+k-5=0 ,satisfy the following?(1) It has two distinct real roots;(2) it has two equal real roots; and (3) it has no real roots. 相关知识点: ...
Now, we will discuss different methods to solve quadratic equations. Solving Quadratic Equations Using Factorisation Let the quadratic equation be ax2+ bx + c = 0, where a, b, c, $\epsilon$ R and a ≠ 0. Let the quadratic polynomial, ax2+ bx + c be expressible as the product of ...
The parent function of a quadratic equation is {eq}y=x^2 {/eq}, whose graph has a vertex at the origin and experiences no vertical stretch or shrink...Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our experts can answer your...