If one zero of the quadratic …

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If one zero of the quadratic polynomial x²+3x+k is 2 then the value of k is-

Posted by Ankita Bera 1 year, 8 months ago

CBSE > Class 10 > Mathematics

5 answers

Maya Shukla 1 year, 7 months ago

Answer hai -10

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_Jass_ Mahey_ 1 year, 7 months ago

By joining B and D. You will get two triangles AND and BCD. Now the area of ∆ABD = 1/2 (-5(-5-5)+(-4) (5-7) +4(7+5) = 1/2(50+8+48) =106/2=53square units Also, the area of ∆BCD=1/2(-4(-6-5) -1(5+5) +4(-5+6) =1/2(44-10+4) =19 square units So, the area of quadrilateral ABCD=53+19=72square units [Note:to find thr area of a polygon, we divide it into triangular regions, which have no common area of these regions. ]

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Priyom Shah 1 year, 8 months ago

-10

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Sahil Singh 1 year, 8 months ago

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Vettri Vel 1 year, 8 months ago

Don't know that is the answer

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