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Determine which of the following polynomials is reducible. OA x2 + 6 OB x2 + 25 OC x2 - 25 OD x2 + 1Find a quadratic equation with rational coefficients, one of whose roots is the given number. Write your answer so that the coefficient of x2 is 1. r1=6 - 10 OA 2 x - 12x - 26 = 0 OB X 2 - 12x + 26 = 0 OC - - 14x - 24 = 0 OD 2 - 11x + 27 =0x +34 Which of the following is equal to ( x - 6) (x+ 2) ? OA 4 5 + X - 6 x+2 OB 5 -4 + X - 6 X+2 OC 5 2 + X - 6 X+2 OD 2 -5 + X - 6 x +2Determine which of the following polynomials is NOT reducible. OA x2 - 1 OB x2 - 18 OC x2 - 21 OD x2 + 18Use Decarte's rule of signs to obtain information regarding the roots of the equation. x3 + 5 = 0 GA 1 positive root, 1 negative root, 1 complex root 0 B 1 positive root, 2 complex roots 0 C 1 negative root, 1 positive root 0 D 1 negative root, 2 complex roots