2. Consider the following formula: y = 3 ( x + 5 ) ( x - 2 )
Which of the following formulas is equivalent to this one?

A. y=3x2+9x-30
B. y=x2+3x-lO
C. y=3x2+3x-lO
D. y=3x2+3x-30
also what is this called so I can get lessons similar to it to study?

Question

2. Consider the following formula: y = 3 ( x + 5 ) ( x - 2 )
Which of the following formulas is equivalent to this one?

A. y=3x2+9x-30
    B. y=x2+3x-lO
    C. y=3x2+3x-lO
    D. y=3x2+3x-30
also what is this called so I can get lessons similar to it to study?

anonymous · Answer

The correct answer is A.  I have no idea what this is called.  Quadratic Expansion?

jhonyy9 · Answer

A. is right

anonymous · Answer

The correct answer is A, but how did you come up with the answer and what would be the best way to study for this type of math problems? It's been a good 16yrs since I have gone down this road. Thanks for all of your help!