WAEC Mathematics – Sierra Leone

Question 1

If \( A = \{1, 2, 3\} \) and \( B = \{2, 3, 4\} \), what is \( A \cup B \)?

Select one option to submit your answer.

Question 2

Solve for \( x \) in the equation \( 2x^2 - 5x + 3 = 0 \).

Select one option to submit your answer.

Question 3

If \( \log_2 x = 5 \), what is the value of \( x \)?

Select one option to submit your answer.

Question 4

Find the derivative of \( f(x) = 3x^3 - 5x^2 + 6x - 2 \).

Select one option to submit your answer.

Question 5

Evaluate \( \int (4x^3 - 2x + 1) dx \).

Select one option to submit your answer.

Question 6

Simplify the algebraic expression: \( 3x^2 - 5x + 2 + 4x^2 + x - 7 \).

Select one option to submit your answer.

Question 7

Solve the quadratic equation \( 2x^2 - 7x + 3 = 0 \).

Select one option to submit your answer.

Question 8

If \( \log_b (x) = 3 \) and \( b^2 = 25 \), what is \( x \)?

Select one option to submit your answer.

Question 9

Given the vector \( \vec{u} = 3\hat{i} - 2\hat{j} + \hat{k} \), find its magnitude.

Select one option to submit your answer.

Question 10

Solve for x: 2x^2 - 5x + 3 = 0.

Select one option to submit your answer.