SOLUTION: If a^2 - 2ab + b^2 = 36 and a^2 - 3ab + b^2 = 22 what is the value of ab ?
(A) 6 (B) 8 (C) 12 (D) 14 (E) It cannot be determined from the information give
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-> SOLUTION: If a^2 - 2ab + b^2 = 36 and a^2 - 3ab + b^2 = 22 what is the value of ab ?
(A) 6 (B) 8 (C) 12 (D) 14 (E) It cannot be determined from the information give
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Question 253171: If a^2 - 2ab + b^2 = 36 and a^2 - 3ab + b^2 = 22 what is the value of ab ?
(A) 6 (B) 8 (C) 12 (D) 14 (E) It cannot be determined from the information give Answer by palanisamy(496) (Show Source):
You can put this solution on YOUR website! Given, a^2 - 2ab + b^2 = 36 ...(1)
and a^2 - 3ab + b^2 = 22 ...(2)
(1)-(2)=>
(a^2 - 2ab + b^2)-(a^2 - 3ab + b^2) = 36-22
a^2 - 2ab + b^2-a^2 + 3ab - b^2 = 14
ab = 14
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