Answer:
Explanation:
Factor:
3x² + 4x - 7=0 >Multiply first and last = -21 Find 2 numbers that
multiply to -21 but add to +4
+7 and -3 multiply to -21 but add to +4
>Replace middle term with +7 and -3
3x² + 7x - 3x - 7=0 >Group the first 2 terms and last 2 terms
(3x² + 7x)( - 3x - 7)=0 >Take out GCF from each grouping
x(3x+7) -1 (3x+7)=0 >Take out GCF (3x+7)
(3x+7)(x -1) =0 >Set each parentheses =0
(3x+7)=0 and (x -1) =0 >Solve for x
x = -7/3 x=1