what is this expression: 1/3+√5 equivalent to?
thanks
2006-11-18 11:42:57 · 5 answers · asked by BLUEEEE 1 in Science & Mathematics ➔ Mathematics
1/(3 + √5) =
1/(3 + √5) * (3 - √5)/(3 - √5) (on multiplying the numerator and denominator by the conjugate of (3 + √5) as (x + y)(x - y) = x² - y²)
= (3 - √5)/(9 - 5) (as 3² = 9 and √5² = 5)
= (3 - √5)/4
2006-11-18 11:46:42 · answer #1 · answered by Wal C 6 · 0⤊ 1⤋
1/3+â5 =
1/3 + 5^2 =
1/3 + 25 = 1/3 + 25 / 1
1/3 + 75/3 = 76/3 = 25.3333333333333333333333333333333333
2006-11-18 19:54:51 · answer #2 · answered by Anonymous · 0⤊ 2⤋
1/3 + sqr(5) = (1 + 3sqr[5])/3
2006-11-18 20:09:26 · answer #3 · answered by kellenraid 6 · 0⤊ 0⤋
1/3+â5
= 0.333 + 2.236
= 2.569 (rounded to 3 decimal places)
2006-11-18 19:45:34 · answer #4 · answered by canzoni 3 · 0⤊ 1⤋
5 squared
2006-11-18 19:44:42 · answer #5 · answered by kim 1 · 0⤊ 2⤋