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P1 Topic 2: Algebra
Expanding brackets 2 backmore
Use the interactive display to see how the expression (ax+b)(cx+d) is multiplied out. You can change the quadratic function and then see the process, step by step. note!





Summary
Multiplying out brackets is such an important part of A Level mathematics. You must practise until you can do it quickly, accurately and reliably.
  • make sure you always leave your answer in the form ax2+bx+c
  • remember: (a+b)2 = a2+2ab+b2 - not a2+b2
  • this topic is part of the AS/A2 background knowledge
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