Question

Sederhankanlah :
a. √60+ √135− √375
b. √18− √8+ √32
c. √20+ √45− √125
d. √50− √72

Answer 1

A. (60)+(135)+(375) = 2(15)+3(15)-5(15) = (15)
b. (18)-(8)+(32) = 3(2)-2(2)+4(2) = 5(2)
c. (20)+(45)-(125) = 2(5)+3(5)-5(5) = (5)
d. (50)-(72) = 5(2)-6(2) = -(2)
Maaf tanda akar nya diganti kurung maaf kalau salah semoga membantu

Answer 2

a. √60+ √135− √375
= 2√15 + 3√15 - 5√15
= (2 + 3 - 5)√15
= √15

b. √18− √8+ √32
= 3√2 - 2√2 + 4√2
= (3 - 2 + 4)√2
= 5√2

c. √20+ √45− √125
= 2√5 + 3√5 - 5√5
= (2 + 3 - 5)√5
= √5

d. √50− √72
= 5√2 - 6√2
= (5 - 6)√2
= -1√2
= -√2