If it's not what You are looking for type in the equation solver your own equation and let us solve it.
Simplifying
2x2 + -15 = 0
Reorder the terms:
-15 + 2x2 = 0
Solving
-15 + 2x2 = 0
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '15' to each side of the equation.
-15 + 15 + 2x2 = 0 + 15
Combine like terms: -15 + 15 = 0
0 + 2x2 = 0 + 15
2x2 = 0 + 15
Combine like terms: 0 + 15 = 15
2x2 = 15
Divide each side by '2'.
x2 = 7.5
Simplifying
x2 = 7.5
Take the square root of each side:
x = {-2.738612788, 2.738612788}
| 0=-7v-3v | | (2x+5)-(8x+6)+3(b-2)= | | 22-3x+17x=4(x+5) | | log(4)*(9*y+9)=6*x^4+9 | | 7x+x-5=7x+8 | | -19=-1(n-6)+8(5-8n) | | 8x-10=-2x+40 | | 1.75t^2-30t-100=0 | | -6=2r+1+3 | | 1+7x+5x=-59 | | 3(x+4)-2=5x+2 | | (8x+4)=(10x-14) | | -44=7(-3m-6)-8(m-7) | | 2x^2-6=206 | | -6u-5=-2u-5 | | -104-8x=40+4x | | 2x-2=128 | | (y^2)-3y-10=0 | | 8k-6-8=4+2k | | -6x-5=7-9x | | -36=6(8+6x)-8(x-7) | | x^2+(k-1)x+4-k=0 | | (4b+8)/(-2)=10 | | 3a-2b=1 | | -4y+19=-2y+4 | | 4(2-3x)=7-3(2+5x) | | g/(-5)+3=-13 | | 3x-6=3(x-6) | | h(-2)=-3-(-2)-2 | | 4log(9x+17)-5=7 | | 3x-123=9x+42 | | 4lig(9x+17)-5=7 |