+808 3x(x+2)2 Recall that: (a + b)2 = a2 + 2ab + b2:
3x(x2 + 4x + 4)
You have to multiply 3x w/ all the terms inside the paranthesis. You can start off w/ only the x, to avoid careless mistakes.
3(x3 + 4x2 + 4x) multiply all the terms inside the paranthesis by 3:
3x3 + 12x2 + 12x
+808 3x(x+2)2 Recall that: (a + b)2 = a2 + 2ab + b2:
3x(x2 + 4x + 4)
You have to multiply 3x w/ all the terms inside the paranthesis. You can start off w/ only the x, to avoid careless mistakes.
3(x3 + 4x2 + 4x) multiply all the terms inside the paranthesis by 3:
3x3 + 12x2 + 12x
