4. Prove: + (i) (x - y - 2)2 – (x2 + y2 + z2) = 2(yz - zx - xy) (ii) (3p - 5q)2 - (3p + 5)2 + 60pq = 0 (iii) (

Question

4. Prove: + (i) (x - y - 2)2 – (x2 + y2 + z2) = 2(yz - zx - xy) (ii) (3p - 5q)2 - (3p + 5)2 + 60pq = 0 (iii) (5a - 2)(5a - 8) = 25(a - 1)2 - 9.​

Luna · Answer

374*493^×272+365+478*583^÷4747

4. Prove:+(i) (x – y – 2)2 – (x2 + y2 + z2) = 2(yz – zx – xy)(ii) (3p – 5q)2 – (3p + 5)2 + 60pq = 0(iii) (