If it's not what You are looking for type in the equation solver your own equation and let us solve it.
39=(x-5)(x+5)
We move all terms to the left:
39-((x-5)(x+5))=0
We use the square of the difference formula
x^2+25+39=0
We add all the numbers together, and all the variables
x^2+64=0
a = 1; b = 0; c = +64;
Δ = b2-4ac
Δ = 02-4·1·64
Δ = -256
Delta is less than zero, so there is no solution for the equation
| 6x+24=10x-42 | | (-4)*x=329 | | 7(3x+2)-3=–178 | | 1-5n-2=-6 | | 6x-2=7x+ | | 4=-6x+5x | | 28=6y-2 | | 4=2v+2v | | 2x+4(x-3)+5=5(x-10)+x-2 | | 12n^2=-24n+128 | | 4=v2+v2 | | 8m=1.5 | | 440m=55 | | n-3+1=-3 | | 15m=1,350 | | 7x+1.2+4x-0.7=15x+8-4x | | 5x+3×=5x+18 | | (4x-80)+(2x+50)+(2x+50)+(4x-80)+(4x-80)+(2x+50)+(2x+50)+(4x-80)=1080 | | (4x²+6x+8)=(3x³-6x²+9) | | 5b+8+6=43 | | -4x-7=10x=-7+6x | | 84b=19 | | -36=6(2-8n( | | 5b+6=43 | | 12x+44=4(2x+1)-6x | | 10x=-240 | | 3(6x-7)=15x | | 2a-5=7a+10 | | 2x+10x-10=2 | | 1/4(4r-11)=2r+1/8 | | (3x-20)+(3x-20)+4x+4x+(3x-20)+(3x-20)=720 | | 2/y+4=12 |