Question

find zero of the following quadric polynomials and verify the relationship b/w the zero and thecoefficient. ,,, xsquare-2x-8

Answer 1

$x {}^{2} - 2x - 8 \: ( - 8 = 1 \times - 7 \\ = 2 \times - 4\\ \\ x {}^{2} + 2x - 4x - 8 = 0(supposed) \\ \\ x(x + 2) - 4(x + 2) = 0 \\ (x + 2) (x - 4) = 0 \\ \\ ( \\ x = - 2and x = 4 \: are \: its \: zeroes$