If the sum of roots of a quadratic Equation is 6 and product is 8, the Equation is ____. A. x² − 6x + 8 = 0 B. x² + 6x + 8 = 0 C. x² − 8x + 6 = 0 D. x² + 8x + 6 = 0 Explanation: Equation = x² − (sum)x + product.
If x² − 7x + 10 = 0, the product of roots is ____. A. 7 B. 10 C. −10 D. −7 Explanation: Product = c/a = 10.
If x² − 10x + 21 = 0, roots are ____. A. 3, 7 B. 2, 9 C. 1, 21 D. 5, 6 Explanation: Factorization → (x−3)(x−7)=0.
If x² − 15x + 56 = 0, roots are ____. A. 7, 8 B. 6, 9 C. 4, 14 D. 5, 11 Explanation: Factorization → (x−7)(x−8)=0.
If x² − 13x + 36 = 0, roots are ____. A. 4, 9 B. 6, 7 C. 3, 12 D. 2, 18 Explanation: Factorization → (x−4)(x−9)=0.
If x² − 11x + 30 = 0, roots are ____. A. 5, 6 B. 3, 10 C. 2, 15 D. 1, 30 Explanation: Factorization → (x−5)(x−6)=0.
If x² + 5x + 6 = 0, roots are ____. A. −2, −3 B. 2, 3 C. −1, −6 D. 1, 6 Explanation: Factorization → (x+2)(x+3)=0.