Question

solve by formula method 9x2+7x-2=0

Answer 1

Answer:

if you want the factors

9x²+9x-2x-2

9x(x+1)-2(x+1)

(9x-2)(x+1)

Answer 2

Answer:

9x^2 + 7x - 2 = 0

Split the middle terms,

9x^2 + 9x - 2x - 2 = 0

9x ( x + 1 )   and    -2 ( x + 1 )

( x + 1)    and ( 9x - 2 )

( x + 1) = 0       ( 9x - 2 ) = 0

x = -1       or         x = 2/9

Therefore x = -1 or x = 2/9

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