一道简单的英语数学题:If x²-7x+9=(x+a)²+b for all x,then what are the values of a and b
问题描述:
一道简单的英语数学题:If x²-7x+9=(x+a)²+b for all x,then what are the values of a and b
答
(x-7/2)^2-13/4==(x+a)²+b
a=-7/2,b=-13/4