If it's not what You are looking for type in the equation solver your own equation and let us solve it.
x2+x3+x4=13
We move all terms to the left:
x2+x3+x4-(13)=0
We add all the numbers together, and all the variables
x^2+x^3+x^4-13=0
We do not support expression: x^3
| 40=4*2x | | 6÷a=18÷27 | | 7d-8=2d+12 | | 8(2x-8)=35 | | a÷6=27÷18 | | 13x-312=0 | | a/6=18/72 | | a÷6=18÷27 | | 7d-8=2d+13 | | 5×-10=4x-12 | | F(x)=x^2+5x-9 | | -7(1)+(-7)(-5x)=133 | | 3(d-6)=d+4 | | 16=k1 | | 8x-18+5x-7+6x-4=180 | | -0=7u | | 0=7u | | x^2+(x+2)^2=364 | | .04=4^x | | 27=-3+4u | | 2x+8=x+85+25 | | 2x+2–5x+15=5 | | 40n^2-64n=0 | | 7(3y+9)=231 | | 21x+13+4x+3x-1=180 | | 1/8x=62.5 | | 0.5x^2-x=24 | | 2x=62.5 | | (7x-19)(17x-19)+(4x+2)(4x+2)=34*34 | | x2+10=110 | | 3(2y+-8)=6 | | 8^a-13+3a=12+5^a-7 |