two adjacent sides of a rectangle are (7psquae -3pq+r) nad(5pq-4psquare). find its perimeter
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Step-by-step explanation:
length =( 7p² - 3pq + r ) units
breadth =( - 4p² + 5pq ) units
Perimeter = 2 ( l+b)
= 2 [ (7p² - 3pq + r) + ( -4p² + 5pq) ]
= 2( 7p² - 4p² - 3pq + 5pq + r)
= 2( 3p² + 2pq + r)
= (6p² + 4pq + 2r) units
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