Answer:
(x+3)(x+4)
Step-by-step explanation:
x²+7x+12
12 we can rewrite as a multiplication: 1*12 or 2*6 or 3*4
7 we can rewrite it as a sum of which 2 numbers you see above?...3+4
x² +3x+4x +12 , write 7x as 3x+4x
x(x+3) + 4(x+3) , factor x from first 2 terms x²+3x and 4 from last 2 terms 4x+12
(x+3) (x+4) , factor x+3
