SOLUTION: Hi! My question is an expression, that has parenthesis. I need to convert it, so it does not have parenthesis. Like using the FOIL, but I'm a little confused about that. The expres

Algebra ->  Expressions-with-variables -> SOLUTION: Hi! My question is an expression, that has parenthesis. I need to convert it, so it does not have parenthesis. Like using the FOIL, but I'm a little confused about that. The expres      Log On


   



Question 1023554: Hi! My question is an expression, that has parenthesis. I need to convert it, so it does not have parenthesis. Like using the FOIL, but I'm a little confused about that. The expression is (x^2 + 3x - 4)(x - 5). How do I find the equivalent? I only have x^3 __ __ + 20. If this makes sense, please help me! And thank you so much!
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Either of two ways: Distributive Property or through a lattice method much like what is done with ordinary long-hand multidigit multiplication.

%28x-5%29%28x%5E2%2B3x-4%29
%28x-5%29x%5E2%2B%28x-5%293x-%28x-5%29%2A4
x%5E3-5x%5E2%2B3x%5E2-15x-%284x-20%29
x%5E3-5x%5E2%2B3x%5E2-15x-4x%2B20
highlight%28x%5E3-2x%5E2-19x%2B20%29