y=5/6x²-3.5x+8/3
1个回答
Y=5/6(X²-21/5X+441/100)-441/120+8/3
=5/6(X-21/10)²-121/120.
相关问题
1.8x+5y=10 8x-5y=10 2.3x+2y=9 4x-2y=5 3.2x+3y=5 6x-2y=-6 4.3
{6x+5y=8,3x=2y-5
(1){5x-3y=5 6x+2y=6 (2){3x+2y=5x+2 2(3x+2y)=2x+8(3){x+3/3+y+
5x^3y-6x-7x^3y-8x=
8y-(8-5y)=3y+2(4y+7) 8-3y=6-x 4x-3(20-x)=5x-7(20-
3x+5y=8 5x+3y=8
8x-(-3y-5)=8x+3y+5
(3){2x+5y=8,(4){2x+3y=6,
6y+3=x ,8y=x+5怎么解
4(3x+8y)-5(2x-6y)