Question

PLZ HELP MY BOARDS ARE ON...
1-If n is odd number and n>1,then prove[n,n²-1/2,n²+1/2]is a pythagorean triplet.Write 2 pythagorean triplet taking suitable value of n.
2-a-If slope of line joining the points [2,x]and[-3,0]is 2/5 the find x.
b-Seg PS is a tangent segment and line PR is a secant.If PO=3.6,OR=6.4.Find PS.
3-Diagonals of a quadrilateral ABCD intersects at point Q.If 2QA=QC,AB||CD,2QB=QD then prove that DC=2AB.
4-A line parallel to Y-axis and is at a distance of 5 units from the X-axis ,write the equation of that line.
5-A side of an isosceles right angled triangle is x, find its hypotenuse.

Answer 1

2) [2,x] and [-3,0] is 2/5

o-x/-3-2=2/5

-x/-5=2/5

x=2