Factoring
2x^2+13+15=0
{-2/3, -5}
(2x-1)^2=0
{1/2, -1/2}
x^2+7x+13=0
{-7 + sqrt 37/2, -7 - sqrt 37/2}
x^2-13x+42=0
{6,7}
(x-4)^2=49
{11,-3}
3x^2+4x-15=0
{-4 + sqrt 196/6,-4 - sqrt 196/6}
4x^2+15x+9=0
{-3/4,-3}
x^2-45=-45
0
x^2-5-24=0
{5+sqrt 71/2, 5- sqrt 71/2}
x^2+3x+2=0
{-1,-2}
2s^2+20=0
{i sqrt 10, -i sqrt 10}
4x^2-22x+4=0
{22+ i sqrt 548/8, 22- i sqrt 548/8}
q^2+12q+32=0
{-8,-4}
x^2-10=-10
0
x^2-10x+7=0
10 + i sqrt 64, 10 - i sqrt 64 }