Math, asked by bhiti1234560, 1 year ago

Expand each of the following using suitable identity:
(i) (x+2y+4z)²
(ii) ( 2x - y+z)²
(iii) (-2x+3y2z)²
(iv) (3a-7b-c)²
(v) (-2x+5y-3z)²
(VI) (¼a - ½b + 1)²

Answers

Answered by shivangi6699
2

(x + 2y + 4z) {}^{2}  = (x) {}^{2}  + (2y) {}^{2}  + (4z) { + }2(x)(2y) + 2(2y)(4z) + 2(4z)(x) \\  = x {}^{2}  + 4y {}^{2}  + 16z {}^{2}  + 4xy + 16yz + 8zx \\ 2) \: (2x - y + z) {}^{2}  = 4x {}^{2}  + y {}^{2}  + z {}^{2}  - 4xy - 2yz + 4zx

shivangi6699: aur thodi der me deti hoo
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