2x²+4x-390=0:-Solve it right now....
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2x^2 +4x -390
has root equal to
x^2 +2x + 195
=x^2 +15x -13x +195
= x(x+15) -13(x+15)
=(x-13)(x+15)
x =-15 or x=13
has root equal to
x^2 +2x + 195
=x^2 +15x -13x +195
= x(x+15) -13(x+15)
=(x-13)(x+15)
x =-15 or x=13
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