2x^2+x-6 solve by formula method
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a= 2 b= 1 c = -6
D = b² - 4ac
D = ( 1)² - 4× 2× (-6)
D = 1+12
D = 13
x= -b + √D/ 2a = -1+√13/4
x = -b-√D/2a = -1-√13/4
hope it helps you...:-)