Mathematics: Question 1 To expand (7r+5s)2 , you can use the pattern (a+b)2=a2+2ab+b2 . What are the values of a and b?

Question 1 To expand (7r+5s)2 , you can use the - id17526400520, hernandez09297

DaylaReevaFEEVA5040

26.01.2022

Step-by-step explanation:

(7r+5s)^2

use the pattern

(a+b)^2=a^2+2ab+b^2

(7r+5s)^2=(7r+5s)(7r+5s)

Apply FOIL method to multiply the parenthesis

(7r+5s)^2=(7r+5s)(7r+5s)

$(7r+5s)(7r+5s)\\49r^2+35rs+35rs+25s^2\\49r^2+70rs+25s^2$

Compare the expression with (a+b)^2=a^2+2ab+b^2

The value of a=7r and the value of b=5s

Answer :

a=7r , b=5s

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kabiletproducciones

18.12.2022

The coefficient is 3, the number right before the variable.

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