MCQ
Tick $(\checkmark)$ the correct answer: $(2x + 5)(2x - 5) = ?$
- A$(4x^2 + 25)$
- ✓$(4x^2 - 25)$
- C$(4x^2 - 10x + 25)$
- D$(4x^2 + 10x - 25)$
✓
Answer
Correct option: B.
$(4x^2 - 25)$
B. $(4x^2 - 25)$
Solution:
$(2x + 5)(2x - 5)$
$= (2x)^2 - (5)^2$
$= 4x^2 - 25$
Solution:
$(2x + 5)(2x - 5)$
$= (2x)^2 - (5)^2$
$= 4x^2 - 25$
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