Brainlag PlusMultiply out a single bracket (with negatives too), expand and simplify sums of brackets, and meet double brackets.
Every term inside
The number or term outside multiplies every term inside.
- 3(2x − 5) = 6x − 15
- x(4x + 7) = 4x² + 7x
- −2(x − 4) = −2x + 8
The third one is where marks are lost: −2 × −4 = +8.
The rest of this lesson and its 7 practice questions are in Plus.
Screen 1 of 3, free to read.
- 7 exam-style questions, marked as you go, each with a worked solution
- The Equation Solver beside every question
- Anything you get wrong is saved to your flashcards