An algebra problem by Syed Hamza Khalid

Algebra Level 2

4 ( x + 7 ) ( 2 x − 1 ) = A x 2 + B x + C 4(x+7)(2x-1)=Ax^2+Bx+C is an algebraic identity for constants A , B , C A,B,C .

What is A + B + C A + B + C ?


The answer is 32.

Syed Hamza Khalid by Syed Hamza Khalid , 17, France

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2 solutions

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Math Nerd 1729
Apr 12, 2020

Plugging in x=1 to the identity gives A+B+C on the right hand side and 32 on the left hand side. :)

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