solve the equation 49-81x=0

常微分solve the equation(x+4y)y'=2x+3y+5 solve the equation 49-81x=0 美国的数学题 顺便帮算出答案Solve each equation for the variable specified3t-4=6t-s,for t Solve the polynomial equation:x^5 - 5x⁴ - 4x³+ 36x²+ 27x - 135 = 0 solve the equation 2x^2-4x=-3 and express the roots in a+bi form.太久没做了,忘记怎么算了. How to solve The number of real solution to the equation x/sinx=100 is Solve the equation cosx= -0.4 on the interval 0≤x＜2π. Solve the equation:(x-6)(x+5)-2(x+2)(x-3)=(4-x)(x+7)+2求解答过程 Solve the equation ,Give the solution in exact fSolve the equation ,Give the solution in exact form.不要用翻译软件翻译的 英语翻译solve the equation graphically by finding x-intercepts.confirm by using factoring to solve the equation.x²－x-20=04x²－8x+3=0x(3x－7)=6 simplify 3/5x-2/7x,then solve the equation 3/5x-2/7x=2/5 Solve the polynomial equation:-12x⁴- 8x³ + 49x² + 39x - 18 = 0 Hence by using a suitable substitution ,solve the equation 25^2(5x+3)=50x+24 How to solve this equation with MATLABx^4-3*x^3+x-1=0 display the solutions to 10 digits.( I need the steps in details..thx..XD..) 英语翻译AbstractThis chapter introduces ordinary differential equation (ODE) and its applications in finance and economics research.There are various approaches to solve an ordinary differential equation.Among them,the most commonly used approach I.am.think.of.a.number.if I.add.4 to the number and then multiply the result by 3,the answer is the same as subtracting 5 from the numbers and then multiplying the result by a) Letting x be the number,write an equation.in terms of b)Solve the equatio 能说明下方法吗23^x-4=16^x x= if the difference of a number and its reciprocal is 16/15 find the number.simplify (x^3+27)/(x+3) given the following roots 3 and -2 write the quadratic equation.solve ｛y=5 y=2x^2 solve the equation .solve the equation 2x³-3x²-11x+6=0 given that -2 is a zero of f(x)=2x³-3x²-11x+6.要翻译和解题过程