Question

Expansions :
1
(42 - 5y - 5) (4x - 5y + 3)



And also write the formula which you are applying. ​

Answer 1

Answer:

25y²-20xy+148x-200y+111

Step-by-step explanation:

(42 - 5y - 5) (4x - 5y + 3)

=42(4x - 5y + 3)-5y(4x - 5y + 3)-5(4x - 5y + 3)

=168x-210y+126-20xy+25y²-15y-20x+25y-15

=25y²-20xy+168x-20x-210y+25y-15y+126-15

=25y²-20xy+148x-200y+111

I hope my answer helps you ☺☺

Answer 2

Answer:

(42 - 5y - 5) (4x - 5y + 3)

(42-5-5y) (4x - 5y + 3)

(37 - 5y) (4x - 5y + 3)

37(4x-5y+3) -5y(4x-5y+3)

(148x-185y+111)+(-20xy+25y^2-15y)

148x-185y+111-20xy+25y^2-15y

148x-185y-15y-20xy+25y^2+111

148x-200y-20xy+25y^2+111

-200y-20xy+25y^2+148x+111

5y(-40y-4x+5y)+148x+111

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