Question

Factor completely: 9x^2 + 42x + 49 someone help please

Answer 1

perfect square trinomial since\[42=2*\sqrt{9}*\sqrt{49}\]thus\[=(3x+7)^2\]

Answer 2

thanks your a lifesaver

Answer 3

no prob

Answer 4

could you help me with this one Rhett decides to build a square room for his movie and music collection. If the area of the room is 4x2 + 28x + 49 square feet, what is the length of one side of the room

Answer 5

you just did that right? it is a square, and it is the square of
\[2x+7\]