tolong banget ya please dibantu pleaseee

2)

x² + 6x – 16 = (x–2) (x+8)
x= 2 atau x= –8
12x² + 10x – 2 = (6x–1) (2x+2)
x= ¹/6 atau x= –1

1.)
Bentuk umum fungsi linear : f(x) = ax + b
f(8) = 8a + b
22 = 8a + b ... (i)

f(5) = 5a + b
13 = 5a + b ... (ii)

Eliminasi persamaan (i) dan (ii)

8a + b = 22
5a + b = 13
–––––––– (–)
3a = 9
a = 3

Subtitusi nilai a ke persamaan (ii)
13 = 5(3) + b
b = 13 - 15
b = -2

a. Rumus fungsi tersebut : f(x) = 3x - 2

_______________________

b. f(2) = 3(2) - 2
= 6 - 2 = 4

f(-2) = 3(-2) - 2
= -6 - 2 = -8

-> f(2) + f(-2) = 4 - 8
= -4

_______________________

2.)
a. x² + 6x - 16
= x² - 2x + 8x - 16
= x(x - 2) + 8(x - 2)
= (x + 8)(x - 2)

________________________

b. 12x² + 10x - 2
= 2[6x² + 5x - 1]
= 2[6x² + 6x - x - 1]
= 2[6x(x + 1) - 1(x + 1)]
= 2(6x - 1)(x + 1)