How many unit tiles need to added to the expression x^2+4x+3 to form the perfect square trinomial?

x^2 + 4x + 3 + 1 = (x + 2)^2

So 1 need to be added.

last option

step-by-step explanation:

given that δdef is right and isoceles,

assuming that side df is the hypotenuse means that de an ef are the other 2 sides that intersect at 90° and are of equal length.

because they are of equal length, we can say that they are congruent

because they intersect at 90°, their slopes must be opposite reciprocals.

only the last option satisfies these conditions.

i can't solve unless i know what the line is

step-by-step explanation:

welcome to/p>