Start learning →

For positive a:b=2:1, evaluate (a²+b²):(a²−b²).

A3:5
B3:1
C4:1
D5:3
Answer & Solution
Correct answer: D. 5:3
Substitution a=2t,b=t gives 5t²:3t², or 5:3.
Practise this question with Quill — ICSE Class 10 →

Keep practising Algebra: Equations, Inequations & Matrices

Browse all Algebra: Equations, Inequations & Matrices questions for ICSE Class 10, or explore more Mathematics topics.

Start a Algebra: Equations, Inequations & Matrices lesson →
Related questions
The smallest natural number that satisfies x > 4 isA linear inequation in one variable can be written asSolve x + 3 > 5, then x belongs toSolve (2 x - 5) / 3 >= 1 over integers.Solve -2 (x - 3) <= 4. Then x belongs toSolve 2 x + 5 > 11, then x belongs toSolve (x + 2)/3 - (x - 1)/2 <= 1. Then x belongs toThe largest integer x satisfying 3 x - 4 < 2 x + 5 is