Question

Evaluate :- (a-3 b-4) (a-2b-2)​

Answer 1

(a−3b−4) (a−2b−2)

= (a+−3b+−4) (a+−2b+−2)

= (a) (a) + (a) (−2b) + (a)(−2) + (−3b) (a) + (−3b) (−2b) + (−3b) (−2) + (−4) (a) + (−4)(−2b) + (−4)(−2)

= a² − 2ab − 2a − 3ab + 6b² + 6b − 4a + 8b + 8

= a² − 5ab + 6b² − 6a + 14b + 8

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