How to do this?

JEE Main Papers › Algebra questions › How to do this?

#Mathematics #Algebra

UP 0 DOWN 0 0 7
Post on FacebookPost anonymously?

7 Answers

1

Rohan Ghosh ·2009-04-28 02:23:20

14-6âˆš5 = (3-âˆš5)²

9-4âˆš5=(âˆš5-2)²

thus the remaining term =âˆš4=2

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

sparkle2009 ·2009-04-28 02:33:22

How to find the square root of a surd?

like 14-6âˆš5 = (3-âˆš5)^2

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Manas ·2009-04-28 02:37:14

hey see u can convert it into the (a+b)² format
that comes due to practise.

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

Rohan Ghosh ·2009-04-28 02:37:15

i did it by observation

saw that 6âˆš5=2*3*âˆš5

and (3)²+(âˆš5)²=14

UP 0 DOWN 0
Post on FacebookPost anonymously?

9

Celestine preetham ·2009-04-28 02:37:44

its by simple observation sparkle

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

noone ·2009-04-28 02:41:08

used to have a method naa in class 6 or 7 ...

by taking p+âˆšq = (a+b)²

then separtely equating rational and irrational terms.

jus as we do for complex no.s also ...

UP 0 DOWN 0
Post on FacebookPost anonymously?

1

sparkle2009 ·2009-04-28 02:41:46

Thanks everyone

UP 0 DOWN 0
Post on FacebookPost anonymously?

Your Answer

Basic Integral Calculus Operators Symbols Matrix Cases

√ √ || {} [] () → ~ ^ x x x → → ln log lg lim lim cos sin tan cot arcsin arccos arctan

∫ ∫ ∫ ∫ ∫ ∬ ∬ ∬ ∬ ∬ ∭ ∭ ∭ ∭ ∭ ⨌ ⨌ ⨌ ⨌ ⨌

∑ ∑ ∑ ∑ ∑ ∮ ∮ ∮ ∮ ∮ ∏ ∏ ∏ ∏ ∏ ∐ ∐ ∐ ∐ ∐

+ - × ÷ ± ∓ = ∪ ∩ ≠ ∼ ≈ ∅ ∀ ∃ ∈ ∋ ∝ ≤ ≥ ≃ ≅ ≡ < > ≪ ≫ ⊂ ∉ ⊃ ⊆ ⊇ ⇒ ⇐ ⇔ ⇒ ⇐ ⇔ ⇑ ⇓ ⇕ → ← ↔ → ← ↔ ↑ ↓ ↕ ↖ ↗ ↘ ↙ ↪ ↩ ⇀ ↼ ⇁ ↽

° ∂ ∞ α β γ δ θ λ μ ν ξ π ρ σ φ ω ε ƒ κ τ υ Γ Δ Λ Σ Π Ω