1) In the equation x2 + 14x + 49 = 0, what is the discriminant, and how many real roots? a) d = 2, two real roots b) d = -1, no real roots c) d = 0, one real root d) d = 1, two real roots 2) What is the discriminant of  x2 - 2x + 1 = 0? a) d = 0, one real root b) d = 2, two real roots c) d = -4, no real roots d) d = 3, two real roots 3) Using the square root method, What are the roots of 49 = x2? a) x = ±6 b) x = ±4 c) x = ±7 d) x = ±2 4) Using the square root method, What are the roots of  x2 = 32? a) x2 = ±4⎷2 b) x2 = ±3⎷2 c) x2 = ±1⎷4 d) x2 = ±6⎷9 5) Using square root method, what are the roots of x2 = -100 ⎷(50+14) a) ±10i ±8 b) ±5i c) ±28.28i d) ±23.40i 6) Which of the following is the quadratic formula? a) (-b ±⎷a2 + 4ac) / 2b b) (-b ±⎷c2 + 4ab) / 2c c) (-b ±⎷b2 - 4ac) / 2a d) (b ±⎷b2 + 4ac / ) 2a 7) Which of the following are the values of a,b,c in the quadratic equation 5x2 -25 = 10x a) a = 5, b = -25 , c = 10 b) a = 25, b = -5 , c = -10 c) a = 5, b = -25 , c = -10 d) a = -10, b =5 , c = 25 8) To solve for the discriminant, what formula is used? a) b±⎷b2-4ac b) (b/2) c) b2-4ac d) (2a - b2) /4 9) if u = x5, what is the equivalent to 7x10 - x5 +14 = 0 a) 7u2 + u - 14 = 0 b) 7u2 + u + 14 = 0 c) 7u2 - u - 14 = 0 d) 7u2 - u + 14 = 0 10) In the Rational Algebraic equation 2/x+3 + 3/x-2 = 5, when transformed to quadratic equation what is the value of x? a) ⎷7i b) ⎷5 c) ⎷5i d) ⎷7

Math Major P.t

بواسطة
طباعة
تضمين

لوحة الصدارة

النمط البصري

الخيارات

تبديل القالب

استعادة الحفظ التلقائي: ؟