Question

If (x + 1)(x - 3) = 12, then which of the following statements is true?


x + 1 = 0 or x - 3 = 0
x + 1 = 12 or x - 3 = 12
x - 5 = 0 or x + 3 = 0

Answer 1

can you FOIL this : (x + 1)(x - 3)
and get it in the form of \(ax^2+bx+c\) ??

Answer 2

whats foil
?

Answer 3

ok, multiply them out .. (x + 1)(x - 3)
like (a+b)(c+d) = ac+ad+bc+bd

Answer 4

im sorry i still dont understand what is it that im mulitiplying out
?