Algebramedium · Past Paper
Expand (x + 2)(x^2 - 2x + 4).
Ax^3 + 8
Bx^3 - 8
Cx^3 + 4
Dx^3 + 2x^2 + 8
✓ Correct Answer: A — x^3 + 8
This is the form (a+b)(a^2 - ab + b^2) which equals a^3 + b^3.
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