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(1+3√2) - (4-√50)
⇒(4√2) - (4-√25×√2) "sederhanakan akar 50 menjadi akar 25 kali akar 2"
⇒(4√2) - (4-5√2)
⇒(4√2) - (-1√2)
⇒4√2 + 1√2 "negative nya di kalikan ke bilangan yang di dalam kurung di kanan, jadi - × -1 = +1"
⇒(4+1)√2
⇒5√2
Maaf jika ada salah" kata ^^
Wassalamu'alaikum ^^