a) Find the zeroes of the quadratic polynomial p(x) = x2 + x - 20using – InterviewSolution

1.

a) Find the zeroes of the quadratic polynomial p(x) = x2 + x - 20using graph.

Answer»

P(x) = x^2 + x - 20

x^2 + 5x - 4x - 20 = 0x(x + 5) - 4(x + 5) = 0(x - 4)(x + 5) = 0x = 4, - 5

Therefore,Zeroes of given polynomial are 4 and - 5

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