Tricky Algebra MYP4

Expand:

(2x-1)²

• 2x² - 2

• 2x² - 1²

• 4x² - 1

• 4x² - 4x + 1

Expand and simplify:

(4x+1)(4x-1)

• 16x² - 1

• 16x² + 1

• 16x² + 8x + 1

• 16x² - 8x + 1

Expand and simplify (do not use spaces in your answer):

(3x-7)(2y-5)

Factorize fully:

16x² - 49

• 4(x² - 12.25)

• x(16x - 49)

• (4x-7)(4x+7)

• (16x-7)(16x+7)

Which of the following can be factorised using the 'difference of two squares'?

• x - 9

• x² - 20

• x² + 16

• x² - 36

• 4x² - 9

Factorize fully (do not use spaces in your answer):

2x² + 8x + 6

How could you factorize this:

x² - 20

• (x-20)(x+20)

• (x-10)(x+2)

• (x+ $\sqrt{20}$ ) (x- $\sqrt{20}$ )
  

• 1(x² - 20)

• No can do.