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7 - Mathematics M1.AL.7 - Identities vs Equations

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  • ✓prove two algebraic expressions to be identical
  • ✓distinguish identities from equations
⏱ 0 mins🎯 68 marks
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(x + 2)² and x² + 4x + 4, they LOOK different, but they're TRUE for every x. That's an IDENTITY. An equation like 2x + 5 = 11, on the other hand, is true for ONLY one value of x. Distinguishing the two is a CSEC favourite.
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💡EngageQuestion 9 of 35

Predict: which statement do you think best describes equation?

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💡Engage
(x + 2)² and x² + 4x + 4, they LOOK different, but they're TRUE for every x. That's an IDENTITY. An equation like 2x + 5 = 11, on the other hand, is true for ONLY one value of x. Distinguishing the two is a CSEC favourite.
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