Algebramedium · Past Paper
Factorize p^2 - 4pq + 4q^2 - r^2.
A(p-2q-r)(p-2q+r)
B(p+2q-r)(p+2q+r)
C(p-2q-r)^2
D(p-q-r)(p+q+r)
✓ Correct Answer: A — (p-2q-r)(p-2q+r)
(p-2q)^2 - r^2 = (p-2q-r)(p-2q+r).
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✓ Correct Answer: A — (p-2q-r)(p-2q+r)
(p-2q)^2 - r^2 = (p-2q-r)(p-2q+r).
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