Question

: A quadratic polynomial with zero 1/4 and -1 is



A: 4x²+3x-1

B: 4x²-3x-1

C: 4x²-3x+1

D: 4x²+3x+1

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Answer 1

Answer:

ax^2+bx+c=k (x - alpha)(x- beta)

=k (x^2-x (alpha+beta)+alpha×beta

=k (x^2- x(1/4-1)+(1/4×-1)

=k (x^2 +3x/4 - 1/4

=k (4x^2+3x -1)

Option a

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