Question
Expand:
$(5x + 11)^2$
$(5x + 11)^2$
✓
Answer
$(5x + 11)^2$
$= (5x)^2+ 2 × 5x × 11 + (11)^2$
$= 25x^2+ 110x + 121$
$= (5x)^2+ 2 × 5x × 11 + (11)^2$
$= 25x^2+ 110x + 121$
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