20x^2+ 55x -35 = 0 Solve by factoring

Asked by AnneS2 on 07 Apr 07:04

Last updated by anonymous on 08 Apr 12:04

Answered by CherieS on 08 Apr 12:04

20x^2+ 55x -35 = 0

5 (4 x^2+11 x-7) = 0

5 (2x )(2x ) ( +7)( -1)

5 (2x+7)(2x-1)

Check:

5(2x7)(2x-1)

5 (2x)(2x) (2x)(-1) (7)(2x) (7)(-1)

5 (4x^2 -2x +14x -7)

5 (4x^2 +12x -7)

Not

Cannot be factored further than 5 (4 x^2+11 x-7) = 0