Answer:
10. -3(y+1)
The coefficients in this polynomial are -3 and 0 (for the constant term). The
sum of these coefficients is -3+0=-3.
11. 5x(3x²-4)
The coefficients in this polynomial are
15, 0, and -20 (for the constant term).
The sum of these coefficients is 15 +0
-20=-5.
12. 7(-2m²+5m+6)
The coefficients in this polynomial are
-14, 35, and 42 (for the constant term). The sum of these coefficients is -14 +
35+ 42 = 63.
13. (x+1)(3x-4)
The coefficients in this polynomial are 3, -1, and 0 (for the constant term). The sum of these coefficients is 3-1+0= 2.
14.
(-2z+5z)(-4x-8)
The coefficients in this polynomial are 8 and 32 (for the constant term). The sum of these coefficients is 8+32= 40.
15. (9x+5)(-4x-8+10x)
The coefficients in this polynomial are -36, 38, and -40 (for the constant term). The sum of these coefficients is -36+38-40 = -38
Explanation: