2
Q.3
Find the third side of the triangle if its perimeter is 7p’q+13r.
14r
2p²q – 4r​

1 thought on “2<br />Q.3<br />Find the third side of the triangle if its perimeter is 7p’q+13r.<br />14r<br />2p²q – 4r​”

1. Answer:

   Step-by-step explanation:

   Given,

   Perimeter of a triangle = 7p

   2

   −5p+11

   And, two of its sides are p

   2

   +2p−1 and 3p

   2

   −6p+3

   We know that,

   Perimeter of a triangle = Sum of three sides of triangle

   ⇒ 7p

   2

   −5p+11=(p

   2

   +2p−1)+(3p

   2

   −6p+3)+( Third side of triangle) 7p

   2

   −5p+11=(4p

   2

   −4p+2)+( Third side of triangle)

   ⇒ Third side of triangle=(7p

   2

   −5p+11)−(4p

   2

   −4p+2)

   = (7p

   2

   −4p

   2

   )+(−5p+4p)+(11−2)

   = 3p

   2

   −p+9

   Thus, the third side of the triangle is 3p

   2

   −p+9

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