Sarthaks Test
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Expand each of the following, using suitable identities:

(i) (-2x + 3y + 2z)2

(ii) (3a - 7b - c)2

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Best answer

It  is known that,

(X + y + z)2 = x2 + y2 + z2 + 2xy + 2yz + 2zx

(i) (-2x + 3y + 2z)

(ii) (3a - 7b - c)2

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