the roots of the equation x2-7x+15=0,
1个回答
答:
A
b^2-4ac=(-7)^2-4*15=-11
相关问题
If the equation m(x-1)=2011-n(x-2) for x has infinite roots,
To find the roots of Equation,we first get rid of the quadra
If the equation m(x-1)-n(x-2)for x has infinite roots,then m
what is the sum of the roots of 4x+3x-8=0?
an equation of the line tangent to the graph of f(x)=x(1-2x)
find the equation of the normal to the curve y=3x2-2x-1which
复数和微积分的题目.救命啊1.express the roots of the equation z^11=1 in a
英文的导数题Let f(x)=8x+20/(x^2).Then the equation of the tangent
AP 微积分 BCthe equation of the line normal to the y=√[(5-x^2)/
How many real roots does the polynomial 2x^5+8x-7 have?