a=x+6 s=ab
b=x
a1=x+4
b1=x-10
x*(x+6)=(x+4)(x-10)+184
x^2 + 6x = x^2 - 10x + 4x - 40 + 184
x^2 + 6x - x^2 + 10x - 4x = 184 - 40
2*x^2 + 12x = 144
x=6
2*6^2 + 12*6 = 144
2*36+72=144
72+72=144
144=144
x = 6cm - ширина
х+6 = 6+6 = 12см - длина
a=x+6 s=ab
b=x
a1=x+4
b1=x-10
x*(x+6)=(x+4)(x-10)+184
x^2 + 6x = x^2 - 10x + 4x - 40 + 184
x^2 + 6x - x^2 + 10x - 4x = 184 - 40
2*x^2 + 12x = 144
x=6
2*6^2 + 12*6 = 144
2*36+72=144
72+72=144
144=144
x = 6cm - ширина
х+6 = 6+6 = 12см - длина