If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
2x2 + 9 = 40
Reorder the terms:
9 + 2x2 = 40
Solving
9 + 2x2 = 40
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + 2x2 = 40 + -9
Combine like terms: 9 + -9 = 0
0 + 2x2 = 40 + -9
2x2 = 40 + -9
Combine like terms: 40 + -9 = 31
2x2 = 31
Divide each side by '2'.
x2 = 15.5
Simplifying
x2 = 15.5
Take the square root of each side:
x = {-3.937003937, 3.937003937}
| 4=4+x/1 | | (x-3+2i)(x-3-2i)=0 | | 3b^2-11b^2+14b^2= | | 1=m+10/26 | | 4+(5+6)=(4+5)+6 | | n/2+9=11 | | -7(2x+5)= | | -1=-5+v+3 | | 2+5=5+2 | | 18=-8x+34 | | x/3-8=-3 | | 3m+5(6-m)=4 | | 3m+5m(6-m)=4 | | 4y-5+y+31=8y+30-5y | | 8r^2-2r+1=0 | | 19=v+7/2 | | a-20/10=-5 | | -4(n-1)-5n= | | 93=c+32 | | w^2-7w-7=0 | | -12+4r=2(r-3) | | 8r^2-0.02r+0.01=0 | | 4=x/5+1 | | 0.08r^2-0.02r+0.01=0 | | -490x^2+75x+12=0 | | 4(3.7)-2y=-20 | | 0.02r-0.01=0.08r^2 | | 14+n/11=12 | | -38x+28=172 | | X^2+18x-16=0 | | -19=n-8/2 | | 3y^2-26y+35=0 |