https://www.khanacademy.org/math/revision-term-1-mh-math-class-8/x0c43044bb5624863:week-2/x0c43044bb5624863:expansion-formulae/v/perfect-square-factorization-intro-indian-accent 2025-06-04T10:04:13.13703146Z Perfect square factorization intro When an expression has the general form a²+2ab+b², then we can factor it as (a+b)². For example, x²+10x+25 can be factored as (x+5)². This method is based on the pattern (a+b)²=a²+2ab+b², which can be verified by expanding the parentheses in (a+b)(a+b). Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Perfect square factorization intro When an expression has the general form a²+2ab+b², then we can factor it as (a+b)². For example, x²+10x+25 can be factored as (x+5)². This method is based on the pattern (a+b)²=a²+2ab+b², which can be verified by expanding the parentheses in (a+b)(a+b). https://cdn.kastatic.org/ka-youtube-converted/4gTihyG8WAw.mp4/4gTihyG8WAw.mp4 320 Factorisation using Identities https://www.khanacademy.org/math/revision-mr-class-7-term-2/x34b615b2e8bb343d:week-3-revision-mr-class-7-term-2-math/x34b615b2e8bb343d:factorisation-using-identities-revision-mr-class-7-term-2-math/v/difference-of-squares-intro-indian-accent 2025-06-06T15:33:38.563209632Z Difference of squares intro When an expression can be viewed as the difference of two perfect squares, i.e. a²-b², then we can factor it as (a+b)(a-b). For example, x²-25 can be factored as (x+5)(x-5). This method is based on the pattern (a+b)(a-b)=a²-b², which can be verified by expanding the parentheses in (a+b)(a-b). Kalakrit (Dubbing) video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Difference of squares intro When an expression can be viewed as the difference of two perfect squares, i.e. a²-b², then we can factor it as (a+b)(a-b). For example, x²-25 can be factored as (x+5)(x-5). This method is based on the pattern (a+b)(a-b)=a²-b², which can be verified by expanding the parentheses in (a+b)(a-b). https://cdn.kastatic.org/ka-youtube-converted/pVH_36ApmTA.mp4/pVH_36ApmTA.mp4 294 Factorisation using Identities https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratics-multiplying-factoring/x2f8bb11595b61c86:factor-difference-squares/e/factoring_difference_of_squares_2 2025-02-13T04:57:25.728250847Z Difference of squares Factor quadratic expressions of the general difference of squares form: (ax)^2-b^2. The factored expressions have the general form (ax+b)(ax-b). Tomer Gal exercise https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-factor/x2ec2f6f830c9fb89:factor-w-structure/e/factoring_difference_of_squares_3 2026-03-17T04:40:31.334379942Z Factor polynomials using structure Factor "advanced" polynomials (i.e. polynomials of various degrees and or with two variables) using special product factorization methods. Tomer Gal exercise https://www.khanacademy.org/math/revision-mr-class-7-term-2/x34b615b2e8bb343d:week-3-revision-mr-class-7-term-2-math/x34b615b2e8bb343d:factorisation-using-identities-revision-mr-class-7-term-2-math/e/revision-expansion-of-squares 2026-01-28T03:50:33.306290623Z Revision Expansion of squares . Khan Academy exercise