解析 【解析】Y_(OM)get x=(-b±√(b^2-4ac))/(2a) = rac(-(5)±√((5)^2-4(1)(-3))(2(1)) =(-5±√(37))/2 =-5/2±(√(37))/2 T he solution of the equation x2+5x-3=0 is such thatx=-5/2±(√(37))/2 ...
Solve each equation using the quadratic formula. -4x^2+2x+3=0 相关知识点: 试题来源: 解析 x= (\ 1± √ (13))4 -4x^2+2x+3=0, so a=-4, b=2, c=3.x= (-(2)±√ (2^2-4(-4)(3)))(2(-4))= (-2± √ (52))(-8)= (\ 2± √ 4√ (13))8= (\ 2± 2√ (...
百度试题 结果1 题目Solve the following equations using the quadratic formula, leaving your answers in surd form. 3x^2=1-x 相关知识点: 试题来源: 解析 (-1± √ (13))/6 反馈 收藏
A. Solve each quadratic equation using the quadratic formula (14 points)1. x^{2}+6x+9=02. x^{2}+7x+10=03. x^{2}+4x-21=0 相关知识点: 试题来源: 解析 -3;-2;-5;-7;3 x^2+6x+9=0: 解:x=-3 x^2+7x+10=0: 解:x=-2, x=-5 x^2+4x-21=0: 解:x=-7, x=3反馈 ...
Move all terms to the left side of the equation and simplify. ( 4k^2+20k-5=0) Use the quadratic formula to find the solutions. ( (-b± √(b^2-4(ac)))/(2a)) Substitute the values ( a=4), ( b=20), and ( c=-5) into the quadratic formula and solve for ( k). (...
Amy has worked with students at all levels from those with special needs to those that are gifted. Cite this lesson The quadratic formula is not only used for solving quadratic equations but also can be used with literal coefficients, or letters instead of numbers. Learn the definition o...
Notice that if the c term is missing, you can always factor x from the other terms. This means that in all such equations, zero will be one of the solutions. An incomplete quadratic with the b term missing must be solved by another method, since factoring will be possible only in speci...
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The three methods of solving quadratic equations are Factoring, Completing the Square, and the Quadratic Formula. Each method has its own merits as, depending on the problem, any of these methods could be the most efficient for solving. How do you solve quadratic equations quickly? With the th...
Solving for the values of x in a quadratic equation yields 2 values, called the root of the quadratic equation. Quadratic equations always yields 2 values as its roots, or answer. This rises from the fact that the formula to solve a quadratic equation is, x= -b ±√b2- 4ac/(2a) ...