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(1)Find the integral values of h for whi...

(1)Find the integral values of `h` for which `hx^2-5xy+4hy^2+x+2y-2=0` represents two real straight lines. (2) If the pair of lines represented by equation `k(k-3)x^2+16xy+(k+1)y^2=0` are perpendicular to each other then find `k`

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