Find the square of: 3a - 2b - 5c

Question

KnowledgeBoat · Accepted Answer

(3a \- 2b \- 5c)² Using the formula (∵ (x \- y \- z)² = x² \+ y² \+ z² \- 2xy \+ 2yz \- 2xz) = (3a)² \+ (2b)² \+ (5c)² \- 2 (3a) (2b) \- 2 (2b) (5c) \+ 2 (5c) (3a) = 9a² \+ 4b² \+ 25c² \- 12ab \+ 20bc \- 30ca Hence, (3a \- 2b \- 5c)² = 9a² \+ 4b² \+ 25c² \- 12ab \+ 20bc \- 30ca

Mathematics

Find the square of:
3a - 2b - 5c

Identities

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Mathematics

Find the square of:3a - 2b - 5c

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