Task: Expand and simplify: (x + 3)(x − 2).
Rebuild the answer: model on the left, hint on the right. Then pick your choice-board level.
Model · Step 1
x × x = x²
Hint
First × first.
Model · Step 2
x × (−2) = −2x
Hint
First × last.
Model · Step 3
3 × x = 3x
Hint
Outer × first of second.
Model · Step 4
3 × (−2) = −6
Hint
Last × last.
Model · Step 5
x² − 2x + 3x − 6 → x² + x − 6
Hint
Collect the x terms.