16x-x²=60
x²-16x+60=0
(x-10)(x-6)=0
x1=10
x2=6
x×(16-x)/2=30
16x-x²=60
-x²+16x-60=0
x²-16x+60=0
(x-6)(x-10)=0
x1=6;x2=10
16x-x^2=60
x^2-16x+60=0
(x-10)(x-6)=0
x=10,x=6
16X-X^2=60
X^2-16X+60=0
(X-6)(X-10)=0
故X1=6:X2=10
16X-X^2=60
X^2-16X+60=0
(X-10)(X-6)=0
X=10 X=6