Easy
Get the standard form of 2x(x-3)=15
2x2-6x-15
Solve 5x2-7x-6=0 by Factoring
-3/5 and 2
What is the square root of 484?
22
Get the sum of the roots of x2+11x=30
-11
Get the standard form of 11x2-98=-11+9x
11x2-9x-87=0
Solve 6x25x-4=0 by Factoring
-4/3 and 1/2
What is the square root of 900?
30
Get the product of the roots of -4x2+100=0
-25
If d=0 is two equal roots, what is d<0?
Two distinct imaginary roots
Solve 25x2+30x+9=0 by Factoring
-3/5
What is the square root of 225?
15
7 and 1/2
2x2-13x+7=0
Get the discriminant of x2-3x-28=0
121
Solving a quadratic equation by completing the square involves extracting the roots of both sides of the equation.
True
If d>0 is a perfect square, what is its nature of roots?
Two rational distinct roots
-7 and 7
x2-49=0
Get the discriminant of x2-5x-14=0
81
In a PST, the constant term is equal to the square of half the numerical coefficient of the middle-term.
True
If d>0 is not a perfect square, its nature of roots is?
Two irrational distinct roots
-7/2 and -1/2
4x2+16x+7=0