Help me with my math work pls

see explanation

Step-by-step explanation:

Using Pythagoras' identity in the right triangle.

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

AB² + BC² = AC² ( substitute values )

x² + (x + 7)² = 17² ← expand factor on left side using FOIL

x² + x² + 14x + 49 = 289

2x² + 14x + 49 = 289 ( subtract 289 from both sides )

2x² + 14x - 240 = 0 ( divide through by 2 )

x² + 7x - 120 = 0 ← as required

“ a line segment that has the endpoints on the circle and passes through the midpoint is called the diameter. the diameter is twice the size of the radius. a line segment that has its endpoints on the circular border but does not pass through the midpoint is called a chord. a circle is the same as 360 small circle up the number 0 . i hope this .

i think da answer is

d.square root of 3