# If a and b are roots of quadratic polynomial 2x^2+5x+k ,find the value of k such that (a+b)^2-ab=24.

2
this sign means 2x to the power 2

i.e. 2x sq.

ok

i think that your ques should be (a+b)^2-ab=21/4

how can you say so,Ichha? please give me the logic behind this.

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