Question

4x^2+12x-7=0 solve by factorization method
​

Answer 1

Answer:

4x ^2 + 12 x - 7 = 0

a + b = 12

ab = 4 ( - 7 ) = - 28

- 1 , 28

- 2, 14

- 4 , 7

- 1 + 28 = 27

- 2 + 14 = 12

- 4 + 7 = 3

a = - 2

b = 14

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

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

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

x = 1 / 2

x = - 7 / 2