Simplifying
x4 + 7x3 + 12x2
Reorder the terms:
12x2 + 7x3 + x4
Factor out the Greatest Common Factor (GCF), 'x2'.
x2(12 + 7x + x2)
Factor a trinomial.
x2((4 + x)(3 + x))
Final result:
x2(4 + x)(3 + x)
Density=mass/volume or d=m/v and the volume of a cube is s^3
We are given that s=2 and m=10 so
d=10/(2^3) g/cm^3
d=10/8 g/cm^3
d=1.25 g/cm^3
Answer:
B. 31r − 71 is the answer!