Find the value of x. a.) 2 b.) 4 c.) 6 d.) 8

Step-by-step explanation:

Given triangle is a right angle triangle

To find out x we use Pythagorean theorem

where c is the hypotenuse

c=square root (20),

Plug in the values in the formula

Subtract 20 on both sides

Divide whole equation by 2

0=x^2-2x-8

factor the right hand side

Set each factor =0 and solve for x

so

so

The length x cannot be negative, so