no 29 plisss jawab donkkk

<=> (x + 2)(x + 2) = (x + 8)(x - 2)
<=> x^2 + 4x + 4 = x^2 + 6x - 16
<=> x^2 + 4x + 4 - x^2 = x^2 + 6x - 16 - x^2
<=> 4 + 16 = 6x - 4x
<=> 20 = 2x
<=> x = 10

Jumlah luas karton mereka:
= (10 + 2)(10 + 2) × 2
= 12(12) × 2
= 144 × 2
= 288 cm^2

(x+2)²=(x+8)(x-2)
x²+4x+4=x²+6x-16
2x=20
x=10

maka jumlah luasnya adalah= 2(x+2)²
                                              =2(12)²=2.144=288 cm²