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P is the resultant of A and B. Q is resultant of A and (-B), the value of P² + Q² would be
(1) 2B²
(2) 2A²
(3) 2(A²-B²)
(4) 2(A²+B²)

Abhishek Dogra , 6 Years ago
Grade 11
anser 1 Answers
Mahima Kanawat

Last Activity: 6 Years ago

Dear student 
P=A+B
Q=A-B
P2+Q2 = (A+B) 2+ (A-B) 2 = A2+B2+2AB+A2+B2-2AB
=2(A2+B2)
WITH REGARDS 
MAHIMA 
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