5x^{2}+2x-7=5\left(x-1\right)\times \frac{5x+7}{5} Add \frac{7}{5} to x by finding a common denominator and adding the numerators. Then reduce the fraction to lowest terms if possible.

免费的方程计算器 - 一步步求解线性方程,二次方程,多项式方程,根式方程,指数方程,对数方程。 输入方程即可获得解,步骤和相应图形.

What are the solutions to the equation 5x^2+2x-7=0 ?

Symbolab: equation search and math solver - solves algebra, trigonometry and calculus problems step by step

首先，表达式需要重写成 5x^ {2}+ax+bx-7。 若要查找 a 和 b，请设置要解决的系统。 由于 ab 是负值，a 并且 b 具有相反的正负号。 a+b 为负，因此负数的绝对值比正数大。 列出提供产品 -35 的所有此类整数对。 将 5x^ {2}-2x-7 改写为 \left (5x^ {2}-7x\right)+\left (5x-7\right)。 Oops. Something went wrong. Please try again. | Khan Academy. …

Factor the polynomial by factoring out the greatest common factor, x+1 x + 1. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

从等式两边同时减去 7 7。 5x2 − 2x−7 = 0 5 x 2 - 2 x - 7 = 0. 使用二次公式求解。 −b±√b2 −4(ac) 2a - b ± b 2 - 4 (a c) 2 a. 将 a = 5 a = 5 、 b = −2 b = - 2 和 c = −7 c = - 7 的值代入二次公式中并求解 x x。 2±√(−2)2 −4 ⋅(5⋅−7) 2⋅5 2 ± (- 2) 2 - 4 ⋅ (5 ⋅ - 7) 2 ⋅ 5. 化简。 点击获取更多步骤... 最终答案为两个解的组合。 免费的数学问题解答者采用逐步解题讲解方式回答您的代数、几何、三角集合学、微积分以及统计学家庭作业问题，就像一位数学辅导老师那样为您提供帮助。

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

Dec 16, 2024 · Transcript. Example 4 Solve 5x – 2 (2x – 7) = 2 (3x – 1) + 7/( 2)5x − 2 (2x − 7) = 2 (3x − 1) + 7/2 5x − 4x + 14 = 2 (3x − 1) + 7/2 5x − 4x + 14 ...

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} \frac{\partial}{\partial x} \int \int_{\msquare}^{\msquare} \lim \sum \infty \theta (f\:\circ\:g) f(x)