Equations and inequalities

Question 1 of 10

Solve x² − 9 = 0.

Question 2 of 10

Solve −2x + 3 ≤ 11.

Question 3 of 10

Five pens and two books cost GH¢41; one pen and one book cost GH¢13. What does a book cost?

Question 4 of 10

Solve 2x² = 18.

Question 5 of 10

Find the range of x for which 5 − 2x < 1.

Question 6 of 10

Complete the square: x² + 6x = (x + 3)² − k. Find k.

Question 7 of 10

For what values of k does 2x² + kx + 8 = 0 have real roots?

Question 8 of 10

Solve √(x + 6) = x.

Question 9 of 10

Solve the simultaneous equations 3x − 2y = 4 and 2x + 3y = 7.

Question 10 of 10

Solve (x − 1)/3 = (x + 3)/5.