Question 918696
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Hi
21y^2 + 2y -3 = 0 
+2 and -3...factors will involve a plus minus situation
And...most likely 7 and 3 to obtain 21
(7y+3)(3y-1) = 0   By habit I put the 'plus' in the first factor
F	First terms (7y)(3y)
O	Outside terms  -7y
I	Inside terms    9y
L	Last terms      -3