xavaoneillx
xavaoneillx xavaoneillx
  • 02-06-2017
  • Mathematics
contestada

Detailed answers appreciated: (7a -4) (2a -5)

Respuesta :

irspow
irspow irspow
  • 02-06-2017
Expand the expression?

Perform indicated multiplication:

7a(2a)+7a(-5)-4(2a)-4(-5)

14a^2-35a-8a+20  combine like terms, ie (-35a-8a)=-43a

14a^2-43a+20
Answer Link
Zane18
Zane18 Zane18
  • 02-06-2017
1. Us the FOIL method: (a + b)(c + d) = ac + ad + bc + bd:
14a^2 - 35a - 8a + 20
2. Collect like terms:
14a^2 + (-35a - 8a) + 20
3. Simplify:
14a^2 - 43a + 20
Answer Link

Otras preguntas

What is the coefficient of y in the expression 12+3y-2x?
Al washed a car in 6 minutes. Fred washes the same car in 8 min. How long dies it take Al and Fred to wash the car together?
solve 2/3 + 1/4x = 1/3
How consumers behaviour affect market equilibrium
Horace read 160 pages in 4 hours. How many pages can he read in 6 hours??
what time is 9 hours and 30 minutes before. 4:25
16 increased by twice a number is -24. Find the solution??
What is the lateral area of the rectangular prism with a base length of 17 m, a base width of 7 m, and a height of 5 m?
What is the change in number of individuals in a population over time? A. population decrease B. population stability C. population growth D. population resista
16 increased by twice a number is -24. Find the solution??