6x+28

3X-28=X+28-6 化简:6x-28-2.5x+30.5 x+3、4x=28、6, 运用提公因式法：x四次方-x²-28x²,3x²-x²-2,（x-1)（x-3)（x+4)+24,4x²-4x-3,6x+7x+1. 紧急,谁知道这个matlab优化程序错在哪里了?function y=myfunction(x);y=0.785398*(4.75*x(1)*x(2)^2*x(3)^2+85*x(1)*x(2)*x(3)^2-85*x(1)*x(3)^2+0.92*x(1)*x(6)^2-x(1)*x(5)^2+0.8*x(1)*x(2)*x(3)*x(6)-1.6*x(1)*x(3)*x(6)+x(4)*x(5)^2+x(4)*x(6)^2+28 四道方程：2x+6=5x 6x-28=2x 8(x-3.6)=0.8x 15x-110+7x=110 计算:(x^2 - 3x - 28)/(x^2 + 5 - 6x) / (3x+12)/(x^3 - 10x^2 + 25x) *-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X || 4.2-0.6x=3.6x 5x+2x=33.6 7x-4x=0.75 2x+7x+2.1=12 56x-32x-119=361 x+5=2x 3x+9=6x 4x-28=2x 2x+18=7x 5x=25*4-15x 7x-x+2*3=29.4 (28.8+5.5x+3.2）除2=71 x(x*x-6x-9)-x(x*x-8x-15)+2x(3-x) 6x+28 填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x (x^2+2x)^2-3x^2-6x-28=0解方程 [ 6x-28-2.5x+30.5 ]简化[ (5x+7)-(4x+0.18) x^2-6x+8和x^2-3x-28用配方法怎么做 解方程:65%x-40%x=80 x-6%x=282 x+70%x=68 15%x+20=65%x-40%x=80x-6%x=282x+70%x=6815%x+20=8030%x-28=623X15-20%x=25 6％x+19x=22.5 70％x-18％x=3.12 28％x+37％x=22.75 78％x=39 (1)14x^2-45x-14 (2)18x^2+3x-10 (3)8x^2-18x+9 (4)10x ^2-11x-6 (5)15x^2-47x+28 （6）x^2-17x+10(1)14x^2-45x-14 (2)18x^2+3x-10 (3)8x^2-18x+9 (4)10x ^2-11x-6 (5)15x^2-47x+28（6）x^2-17x+10 （7）12x^2-x-6 （8）24x^2-2x-15 因式分解