The Total solution for NCERT class 6-12
We know that a3 + b3 = (a + b)(a2 – ab + b2)a3 – b3 = (a – b) (a2 + aft + b2)p3 + 21 = (p)3 + (3)3= (p + 3) (p2– p x 3 + 32)= (p + 3) (p2 – 3p + 9)