Expanding and factorising double brackets

Expand the following:

(3x+3)(4x+4)

• 12x² + 24x + 12

• 12x + 24x + 12

• 12x² + 24 + 12

• 12x² - 24x + 12

Factorise the following :

81m² - 16

Expand the following :

(4w-5)²

• 16w² + 40w - 25

• 16w² - 40w + 25

• 16w - 25

Factories the following :

35w² + 47w - 60

Expand the following:

4(5x+6)

Factories the following:

100w² + 60w

Which one of the following is the correct answer for this ?

300x²+60x

• 30(10x+2)

• 100x(3x+0.6)

• Both of them

Is this a benefit of expanding brackets double and triple brackets :

It is helpful to always multiply the terms in order so none are forgotten.

• Yes

• No

• Maybe

• I can’t say

True or false : this is the wrong Way of solving double brackets

In your opinion is learning expanding brackets very important or not?