Find the value of `lambda " if " 2x^(2) +6xy +3y^(2) +8x +14y +lambda =0` represent a pair of straight lines.

Find the value of lambda if 2x^(2)+7xy+3y^(2)+8x+14y+lambda=0 represents a pair of straight lines

Find the value of lambda if 2x^(2)+7xy+3y^(2)+8x+14y+lambda=0 represent a pair of straight lines.

Find the value of Lambda if 2x^(2)+7xy+3y^(2)+8x+14y+lambda=0 represent a pair of straight lines.

Find the value of lambda if 2x^2+7x y+3y^2+8x+14 y+lambda=0 represents a pair of straight lines

Find the value of lambda if 2x^2+7x y+3y^2+8x+14 y+lambda=0 represents a pair of straight lines

Find the value of lambda if 2x^2+7x y+3y^2+8x+14 y+lambda=0 represents a pair of straight lines.

Find the value of lambda if 2x^2+7x y+3y^2+8x+14 y+lambda=0 represents a pair of straight lines

Find lambda so that x^(2) + 5xy + 4y^(2) + 3x + 2y + lambda = 0 may represent a pair of straight lines. Find also the angle between them for this value of a lambda