Question

Write the following in the expanded form:
(i) (a + 2b + c)²
(ii) (2a - 3b - c)²
(iii) (-3x + y + z)2
(iv) (m + 2n – 5p)²
(v) (2 + x – 2y)²
(vi) (a² + b² + c²)²
(vii) (ab + bc + ca)²
(viii) (X/Y+Y/Z+Z/X)²
(ix) (a/bc+b/ca+c/ab)²
(x) (x + 2y + 4z)²
(xi) (2x - y + z)²
(xii) (-2x + 3y + 2z)²

Answer 1

Given :  (a + 2b + c)²

To find : expanded form:

Solution:

(a + 2b + c)²

= ( (a + c) + 2b)²

use identity

(x + y)² = x² + y² + 2xy

x = a + c  

y = 2b

= (a + c)² + (2b)² + 2(a + c)(2b)

= a² + c² + 2ac   + 4b²  +  4ab + 4bc

= a² + 4b² + c²  + 4ab + 4bc + 2ac

(a + 2b + c)² = a² + 4b² + c²  + 4ab + 4bc + 2ac  

Expand others similarly  

Please post Question one by one

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Answer 2

Answer:

from where did you get these questions btw❤