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Links of other identities
1.(a + a)^2 = a^2 + 2ab + b^2 https://fb.watch/8QEMoAs_z9/
2. (a - b)^ 2 = a^2 - 2ab + b^2 https://fb.watch/8QENX-dXJz/
3.a^2 - b^2 = (a + b)(a - b) https://fb.watch/8QEQ5Z3qkc/
4.(x + a)(x + b)=x^2+ (a + b)x +ab https://fb.watch/9hN6RGmRWC/
5.(a + b)^3 = a^3 + 3a^2b + 3ab^2 + a^3 https://fb.watch/9BG6QE1K6M/
6.(a - b)^3 = a^3 - 3a^2 b + 3ab^2 -b^3 https://fb.watch/ah27Awc1Fz/