omar3377bdnd omar3377bdnd
  • 01-08-2022
  • Mathematics
contestada

Find the square.
(7m-3) 2
49m²-21m-9

Respuesta :

reinhard10158
reinhard10158 reinhard10158
  • 11-08-2022

Step-by-step explanation:

(7m - 3)² = 49m² - 42m + 9

play it through and do the actual multiplication behind the square :

(7m - 3)² = (7m - 3)(7m - 3) =

= 7m×7m + 7m×(-3) + (-3)×7m + (-3)(-3) =

= 49m² - 2×21m + 9 = 49m² - 42m + 9

Answer Link

Otras preguntas

how do you model the square root of 16
how do you model the square root of 16
why a flat surface of a rectangular prism called faces?
At the concession stand of a school foot ball game, sandwiches cost $1.50 and a bottle of water costs $.90. The school sells 40 sandwiches and 80 bottles of wat
A car salesperson earns 1.5% commission on every car sold. The salesperson sell a car for $22,500. What is the commission?
Mrs.Savin receives a weekly base salary of $500,plus a commission of $1200 on each car that she sells. Write a function rule relating her total weekly pay p to
what derived unit is usually used to express the density of liquids?
What is 0.8% written as a decimal
What is does the phrase foe to ambition.
Which fossil occurs on the most landmasses? & What does this suggest about when these particular continents broke up?