giải
Ta có : \(\left(a+b\right)^2=\left(a-b\right)^2+4ab\)
Với \(a-b=8\)và \(ab=10\)
\(\Rightarrow\left(a+b\right)^2=8^2+4\times10\)
\(=104\)
Given the isosceles triangle ABC (AB=AC) with \(A=108^o\). Draw the bisector AD and BE of angles A and B respectively. Given BE = 10cm. Evaluate AD.
Given a trapezoid ABCD with base AB=4cm , CD=6cm , and góc C + góc D = 90 độ . Let M, N be respectively the midpoints of the segments AB and CD . Evaluate MN.
Answer: MN= ? cm
Given that\(\frac{x^3+x^2-4x-4}{x^3+8x^2+17x+10}=\frac{x+a}{x+b}\) .Evaluate \(a+b\)
1.Given the quadrilateral ABCD with two diagonals perpendicular and AB = 8cm, BC = 7cm, AD = 4cm. Evaluate CD.
2.Given three consecutive even natural numbers, which have the product of last two numbers is 80 greater than the product of first two numbers.
Find the largest number.
Answer: The largest number is
given the quadrilateral ABCD with two diagonals perpendicular and AB=8cm, BC=7cm, AD=4cm. Evaluate CD
Câu 10:
Given the isosceles triangle ABC (AB=AC) with A =108 . Draw the bisector AD and BE of angles A and B respectively. Given BE = 10cm. Evaluate AD.
Answer: AD = ? cm.
Given the isosceles triangle ABC (AB=AC) with . Draw the bisector AD and BE of angles A and B respectively. Given BE = 10cm. Evaluate AD.
Given ab=4 and a+b=5 Evaluate a3+b3.
Answer: a3+b3=
it is given ab/a+b=8. the value of a+b is square number. find a and b.