Question

2 x²-8x-42 split middle term​

Answer 1

2x2 - ( 14 - 6 )x - 42

2x2 - 14x + 6x - 42

2x ( x - 7 ) + 6 ( x - 7 )

( x - 7 ) ( 2x +6 ) ans...

HOPE THIS WILL HELPFUL TO U AND THANK ME AND MARK ME AS A BRAINLIST AND NEVER FORGET TO FOLLOW ME

Answer 2

2x² - 8x - 42 = 0

x² - 4x -21 = 0

x² - 7x + 3x - 21 = 0

x(x - 7) + 4(x - 7) = 0

(x + 4) (x - 7) = 0

Hence, x = -4 or 7

Hope it helps.

^_°