Start learning →

x^2 - 9x + 20 = 0 ह्या मुळांचो बेरीज असो आसा

A4
B9
C5
D20
Answer & Solution
Correct answer: B. 9
समीकरण घटक (x - 4)(x - 5) अशें करतात, देखून मुळां 4 आनी 5 अशीं आसतात, 9 मेरेन बेरीज करतात.
Practise this question with Quill — RRB NTPC →

Keep practising Elementary Algebra

Browse all Elementary Algebra questions for RRB NTPC, or explore more Mathematics topics.

Start a Elementary Algebra lesson →
Related questions
RRB NTPC · Algebraic ExpansionsRRB NTPC · Solving Linear EquationsExpand and simplify the algebraic expression: (x + 3)(x - 3)Evaluate the quadratic expression 2x^2 + 5x - 4 when x = 3:If a + b = 10 and a - b = 4, what is the value of a?Solve for x: 3x - 7 = 14. What is the value of x?RRB NTPC · Solve Linear EquationsWhen a system of two lines on the plane has no intersection, what is its solution set?