A Level Maths Pure Year 1 Chapter 2: Mini test

Solve 4x² - 16 = 0

• x = 2, -2
• x = 2
• x = -2
• x = 4, -4

Complete the square: x² - 6x + 2

• (x - 3)² + 11
• (x - 3)² + 2
• (x - 3)² - 7

The quadratic formula...

• x=\frac{-b\pm\sqrt{b^2-4ac}}{2a}
• x=\frac{b\pm\sqrt{-b^2-4ac}}{2a}

What is the y-intercept?

• 2
• 8
• 0

What does this tell us?

• 1 root
• 2 roots
• no real roots