Multiply: (5x^2 – 3x + 7) by (4x + 3) and verify the result when x=2 – InterviewSolution

1.

Multiply: (5x^2 – 3x + 7) by (4x + 3) and verify the result when x=2

Answer»

x2-3x+7)+3(5x2-3x+7)=0

20x2-12x+28x+15x2-9x+21=0

35x2-21x+49=0

under ROOT

b2-4ac

(21)2-4(35)(49)

441-6860

-6419 No real ROOTS

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