Question

Simplify the following expressions: (2x+7y) (x-3y) – (9x+4) (3x-2) proper solution​

Answer 1

Answer:

Answer is in the picture

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Answer 2

Answer:

Step-by-step explanation:

(2x+7y) (x-3y) - (9x+4) (3x+2)

= (2x+7y) (x-3y) - (9x-4) (3x-2)

= 2x*x + 2x*-3y + 7y*x +7y*-3y - 9x*3x - 9x*-2 - 4*3x - 4*-2

= 2x^2 - 6xy + 7xy - 7y^2 - 27x^2 + 18x - 12x + 8

= 2x^2 - 27x^2 - 6xy +7xy + 18x - 12x - 7y^2 + 8

= -25x^2 + xy + 6x - 7y^2 +8

= 5x^2 + xy + 6x - 7y^2 +8