Minta tolong banruin kerjain yg nmer 18, 19, 20, 22 ya

(2x+5)^2= 625
(2×+5)= akar 625
2x+5= 25
2× =25-5
2× = 20
× = 20÷2
×= 10

akar x+6
= 10 + 6
= 16
akar dr 16 adalah 4
jawaban a