Check your solution by substituting your answer into the equation. Expand the brackets on the left-hand side of the equation. 11 multiplied by 2 is 22. -3𝒙 multiplied by 2 is -6𝒙. The 4 is ...

A grid can be used to expand double brackets. Every term in the first bracket must be multiplied by every term in the second bracket. One bracket may be multiplied by another bracket. This is ...