Waec Mathematics 2017 Past Questions and Answers

Question 26:

• WAEC 2017

Three exterior angles of a polygon are 30\(^o\), 40\(^o\) and 60\(^o\). If the remaining exterior angles are 46\(^o\) each, name the polygon.

A. Decagon
B. Nonagon
C. Octagon
D. Hexagon

Question 27:

• WAEC 2017

Simplify the expression \(\frac{a^2 b^4 - b^2 a^4}{ab(a + b)}\)


A. \(a^2 - b^2\)
B. \(b^2 - a^2\)
C. \(a^2b - ab^2\)
D. \(ab^2 - a^2b\)

Question 28:

• WAEC 2017

Find the 6th term of the sequence \(\frac{2}{3} \frac{7}{15} \frac{4}{15}\),...

A. -\(\frac{1}{3}\)
B. -\(\frac{1}{5}\)
C. -\(\frac{1}{15}\)
D. \(\frac{1}{9}\)

Question 29:

• WAEC 2017

The roots of a quadratic equation are \(\frac{-1}{2}\) and \(\frac{2}{3}\). Find the equation.

A. \(6x^2 - x + 2 = 0\)
B. \(6x^2 - x - 2 = 0\)
C. \(6x^2 + x - 2 = 0\)
D. \(6x^2 + x + 2 = 0\)

Question 30:

• WAEC 2017

Make x the subject of the relation d = \(\sqrt{\frac{6}{x} - \frac{y}{2}}\)

A. X = \(\frac{6 + 12}{d^2 + y}\)
B. X = \(\frac{12}{d^2 - y}\)
C. X = \(\frac{12}{y} - 2d^2\)
D. X = \(\frac{12}{2d^2 - y}\)