Nilai dari 1/2√45-2√12+1/2√20+√75=
Matematika
Kamranzaid
Pertanyaan
Nilai dari 1/2√45-2√12+1/2√20+√75=
2 Jawaban
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1. Jawaban teanon
1/2√45-2√12+1/2√20+√75
= 1/2 √9√5 - 2√4√3 + 1/2√4√5 + √25√3
= (1/2 x 3√5) - (2 x 2√3) + (1/2 x 2√5) + 5√3
= 3/2 √5 - 4√3 + √5 + 5√3
= 3/2 √5 + √5 - 4√3 + 5√3
= 5/2 √5 - √3 -
2. Jawaban ananekusuma21
1/2 √45 - 2√12 + 1/2 √20 + √75
= 1/2 √(9x5) - 2√(4x3) + 1/2 √(4x5) + √(25x3)
= 1/2 x 3√5 - 2 x 2√3 + 1/2 x 2√5 + 5√3
= 3/2 √5 - 4√3 + √5 + 5√3
= (3/2 + 1)√5 + (-4/3 + 5)√3
= 5/2 √5 + 11/15 √3