Quadratic
(x-1)(x+3)=0
x1=1, x2=-3
What is the sum of the interior angles in a pentagon?
540 degrees.
x2 + x - 12=0
x1= -4, x2=3
If two triangles are similar, what do we know about their angles?
They are equal respectively.
What is the name of the expression b2 - 4ac in the quadratic formula?
Discriminant
If we draw a tangent to a circle, it is always ________ to the radius.
perpendicular
x2 + 5x - 14 < 0
- 7 < x < 2
The ratio of the sides of two squares is 2 : 3. What is the ratio of their areas?
4 : 9
x4 - 26x2 + 25 = 0
x1= -5, x2 = 5, x3=-1, x4=1
The hypotenuse of a right-angled triangle is 13 cm. And one of the perpendicular side is 12 cm. Calculate the radius of the inscribed circle.
2 cm