Tolong dijawab nomor 23

2x² - 5x -7 =0
(2x-7)(x+1)

x1= 7/2
x2= -1

persamaan baru
X1 = (x1+x2) = 7/2 + (-1) = 5/2
X2 = (x1.x2)= 7/2 . (-1) = -7/2

X1 ====> x = 5/2 -> 2x = 5 -> (2x-5)
X2 ====> x = -7/2 -> 2x = -7 -> (2x+7)

X1.X2 = (2x-5)(2x+7) = 4x² + 14x -10x -35 = 4x² +4x -35

entahlah benar atau tidaknya wkwkwk