The square of a number increased by 5 times the number is equal to 176. find one number for which this could be true

Number 11
11^=121
121+ 5x11 = 121+55=176

For this case, the first thing we must do is define variables.
 We have then:
 x: unknown number.
 We now write the equation that models the problem:
 The square of a number increased by 5 times the number is equal to 176:
 
 From here, we solve the polynomial of the second degree.
 
 Which solutions are:
 
 
 The numbers for which it is possible are:
 x1 = -16
 x2 = 11

Your answer would be ahere is how: perimeter is how long all the sides are. in a rectangle, there are two sets of parallel sides. so, to find this, we would to the following.(15x2)+(4x2)30+838if you have questions ask! and mark me brainliest! i really wanna level up : 3