问题1.找到产品2a 3 (3a + 5b)
解决方案:
Using Distributive law,
2a3 (3a + 5b) = 2a3 × 3a + 2a3 × 5b
= 6a3+1 + 10a3b = 6a4 + 10a3b
Hence, the product is 6a4 + 10a3b
问题2.查找产品-11a(3a + 2b)
解决方案:
Using Distributive law,
-11a (3a + 2b) = -11a × 3a + (-11a) × 2b
= -33a1+1 – 22ab = -33a2 – 22ab
Hence, the product is -33a2 – 22ab
问题3.查找产品-5a(7a – 2b)
解决方案:
Using Distributive law,
-5a (7a – 2b) = -5a × 7a – (-5a) × 2b
= -35a1+1 + 10ab = -35a2 + 10ab
Hence, the product is -35a2 + 10ab
问题4.查找产品-11y 2 (3y + 7)
解决方案:
Using Distributive law,
-11y2 (3y + 7) = -11y2 × 3y + (-11y2) × 7
= -33y2+1 – 77y2 = -33y3 – 77y2
Hence, the product is -33y3 – 77y2
问题5.查找6x / 5(x 3 + y 3 )的乘积
解决方案:
Using Distributive law,
6x/5 (x3+y3) = 6x/5 × x3 + 6x/5 × y3
= 6x3+1/5 + 6xy3/5 = 6x4/5 + 6xy3/5
Hence, the product is 6x4/5 + 6xy3/5
问题6.求xy(x 3 – y 3 )的乘积
解决方案:
Using Distributive law,
xy (x3-y3) = xy × x3 – xy × y3
= x3+1y – xy3+1 = x4y – xy4
Hence, the product is x4y – xy4
问题7.求出0.1y的乘积(0.1x 5 + 0.1y)
解决方案:
Using Distributive law,
0.1y (0.1x5 + 0.1y) = 0.1y × 0.1x5 + 0.1y × 0.1y
= 0.01x5y + 0.01y2
Hence, the product is 0.01x5y + 0.01y2
问题8.找到的产物(-7ab 2 C / 4 -图6a 2 C 2/25)(-50A 2 B 2 C 2)
解决方案:
Using Distributive law,
(-7ab2c/4 – 6a2c2/25) (-50a2b2c2) = (-50a2b2c2) × (-7ab2c/4) – (-50a2b2c2) × (6a2c2/25)
= 175a2+1b2+2c2+1/2 + 12a2+2b2c2+2
= 175a3b4c3/2 + 12a4b2c4
Hence, the product is 175a3b4c3/2 + 12a4b2c4
问题9.查找-8xyz / 27的产物(3xyz 2/2 – 2 9XY Z 3/4)
解决方案:
Using Distributive law,
-8xyz/27 (3xyz2/2 – 9xy2z3/4) = (-8xyz/27) × (3xyz2/2) – (-8xyz/27) × (9xy2z3/4)
= -4x1+1y1+1z1+2/9 + 2x1+1y1+2z1+3/3
= -4x2y2z3/9 + 2x2y3z4/3
Hence, the product is -4x2y2z3/9 + 2x2y3z4/3
问题10查找的产物(-4xyz / 27)[9X 2 YZ / 2 – 3xyz 2/4]
解决方案:
Using Distributive law,
(-4xyz/27) [9x2yz/2 – 3xyz2/4] = (-4xyz/27) × (9x2yz/2) + (-4xyz/27) × (3xyz2/4)
= -2x1+2y1+1z1+1/3 + 1x1+1y1+1z1+2/9
= -2x3y2z2/3 + 1x2y2z3/9
Hence, the product is –2x3y2z2/3 + 1x2y2z3/9