有幾條S1低能數唔係太識

黑暗小魔星

The figure shows a rectangle of length (X+8)cm and width x cm
(a)express the perimeter of the rectangle in terms of x.
(b1)if the perimeter of the rectangle is 36cm,set up an algebraic
equation to find the value of x.
(b2)if the perimeter of the rectangle is greater than or equal to 36cm ,set up an algebraic inequality involving x.代數共3條,感激

ting

a. (X+8+x)*2  cm
b1.   (x+8+x)*2=36
                    x=5
b2.    (x+8+x)*2>=36