Question

. Find the zeros of the following quadratic polynomials and verify the relationship between the zeros and the coefficients: x2 + 3x – 10

Answer 1

Answer:

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Step-by-step explanation:

${x}^{2} + 3x - 10 = 0 \\ {x}^{2} - 2x + 5x - 10 = 0 \\ x(x - 2) + 5(x - 2) = 0 \\ (x + 5)(x - 2) = 0 \\ (x + 5) = 0 \: \: \: \: and \: \: \: (x - 2) = 0 \\ x = - 5 \: \: \: \: \: \: and \: \: \: \: \: \: x = 2 \\ so... \: \\ we \: consider \: the \: positive \: value.. \\ {2}^{2} + 3(2) - 10 \\ 4 + 6 - 10 \\ 10 - 10 \\ 0$

hence solved...

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