Answer: -8x^3y^2 (choice B)
The coefficients multiply to 4 times -2 = -8
the x terms multiply to x^2 times x = x^(2+1) = x^3
The y terms multiply to y times y = y^(1+1) = y^2
So that's how I ended up with -8x^3y^2
Divide the total centimeters by centimeters per inch:
51.78 / 2.54 = 30.386 inches.
2x2+5x=12, 2x+5x=7x, 12+2=14, 7x/7=14/7, x=2
[ (12 - n)/7 ] = -1
12- n = -7
-n = -19
n = 19
