Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

x²-5x+4=0 用一个巧妙一点的方法可得： （x-1）（x-4）=0. 所以x1=1，x2=4.

Rewrite x^ {2}-5x+4 as \left (x^ {2}-4x\right)+\left (-x+4\right). Factor out x in the first and -1 in the second group. Factor out common term x-4 by using distributive property.

2012年5月25日 · x -4 把x^2分解成两个x相乘，把+4分解成-1和-4相乘，如上图。交叉相乘得x*(-4)+x(-1)= -5x，所以因式分解得（x-1）*（x-4）

Graph the parabola using its properties and the selected points. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions …

Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

x^2: x^{\msquare} \log_{\msquare} \sqrt{\square} \nthroot[\msquare]{\square} \le \ge \frac{\msquare}{\msquare} \cdot \div: x^{\circ} \pi \left(\square\right)^{'} \frac{d}{dx} …

All equations of the form ax^ {2}+bx+c=0 can be solved using the quadratic formula: \frac {-b±\sqrt {b^ {2}-4ac}} {2a}. The quadratic formula gives two solutions, one when ± is addition and one …

To find the factored form of a polynomial, this calculator employs the following methods: 1. Factoring GCF, 2. Factoring by grouping, 3. Using the difference of squares 4. Perfect Square …

To solve the equation, factor x^ {2}-5x+4 using formula x^ {2}+\left (a+b\right)x+ab=\left (x+a\right)\left (x+b\right). To find a and b, set up a system to be solved. Since is positive, and …