CBSE Class 9 algebraicidentities — practice questions
12 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 9 algebraicidentities in the app →The algebraic identity (a + b)² is equal to:The identity (a − b)² is equal to:The identity (a + b)(a − b) equals:Use an identity to compute 102² quickly:Compute 98² using an identity:Compute 47 × 53 using an identity:Factorise: 9x² − 25y²:Find the value of x² + y² if x + y = 10 and xy = 21:If a + b = 7 and a − b = 3, find a² − b²:Find (x − 1/x)² if x + 1/x = 4:Is (a + b)² > a² + b² always true for non-zero a, b?Expand (2x + 3y)²: