1
Question
(4pq+3q)2 − (4pq−3q)2= ____________.
(4pq+3q)2 − (4pq−3q)2= ____________.
44p
48
q
44
q
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Solution
The correct options are
B 48q
C 48pq2
(4pq+3q)2−(4pq−3q)2
=[(4pq)2+(3q)2+2(4pq)(3q)]−[(4pq)2+(3q)2−2(4pq)(3q)]
=24pq2+24pq2=48pq2
B
48q
C
48pq2
(4pq+3q)2−(4pq−3q)2
=[(4pq)2+(3q)2+2(4pq)(3q)]−[(4pq)2+(3q)2−2(4pq)(3q)]
=24pq2+24pq2=48pq2
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