Chương I - Căn bậc hai. Căn bậc ba

BS

help

Question 7:

Bottle A contains 15% syrup. Bottle B contains 40% syrup. When these 2 bottles of syrup are mixed, the syrup content is 30% and the total volume is 600ml. How much syrup is in the bottle A at first?

Let ABCD be a trapezoid with bases AB, CD and O be the intersection of AC and BD. If the areas of triangle OAB, triangle OCD are 16cm2, 40cm2respectively and M is the midpoint of BD, then the area of the triangle AMD is .........cm2.

Question 14:

Suppose that the polynomial f(x) = x5 - x4 - 4x3 + 2x2 + 4x + 1 has 5 solutions x1; x2; x3; x4; x5. The other polynomial k(x) = x2 - 4.
Find the value of P = k(x1) x k(x2) x k(x3) x k(x4) x k(x5)


Các câu hỏi tương tự
XL
Xem chi tiết
H24
Xem chi tiết
NH
Xem chi tiết
CT
Xem chi tiết
H24
Xem chi tiết
TT
Xem chi tiết
VD
Xem chi tiết
NC
Xem chi tiết
TM
Xem chi tiết