Find (f.g) (2) When F (x) = X - 1 And G (x) = - 5x^2 + 14x + 7 . - Toppr

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SolveGuidesJoin / LoginUse appLogin0You visited us 0 times! Enjoying our articles? Unlock Full Access!Standard XIIMathematicsQuestionFind (f.g)(2) when f(x)=x−1 and g(x)=−5x2+14x+7.
  1. 45
  2. −39
  3. 39
  4. 15
A45B−39C39D15Open in AppSolutionVerified by Toppr

(f.g)(2) means f(2).g(2)Given, f(x)=x−1,g(x)=−5x2+14x+7So, f(2)=2−1=1and g(2)=−5(2)2+14(2)+7=−20+28+7=15Thus (f.g)(2)=f(2).g(2)=15×1=15

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