Factorise x^2 + 5x + 6.
A(x + 5)(x + 1)
B(x - 2)(x - 3)
C(x + 2)(x + 3)
D(x + 1)(x + 6)
Answer & Solution
Correct answer: C. (x + 2)(x + 3)
Two numbers with product 6 and sum 5 are 2 and 3.
Keep practising Elementary Algebra
Browse all Elementary Algebra questions for RRB NTPC, or explore more Mathematics topics.
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?