Question

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

Answer 1

Answer:

29x^2+21y^2-30x-8

Step-by-step explanation:

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

2x^2+7xy-6xy-21y^2-27x^2-12x-18x-8

2x^2+xy-21y^2-27x^2-30x-8

25x^2+xy-21y^2-30x-8

                 OR

Step-by-step explanation:

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

2x²-6xy+7xy-21y²-((27x²-18x+12x-8)

2x²+xy-21y²-27x²+6x+8

-25x²+xy-21y²36x+8 is the answer

      HOPE IT WILL HELP YOU . I HAVE GIVEN TWO ANSWER YOU CAN GO FOR ANYONE .

Answer 2

Question:

Simplify the following expressions :-

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

Answer:

$\underline{ \: \sf \pink{\bold{ 25 {x}^{2} - 18x - xy + 21 {y}^{2} + 8}} \: } \: is \: the \: answer.$

Step-by-step explanation:

$\sf(2x + 7y)(x - 3y) - (9x + 4)(3x - 2)$

$\implies \sf \big[2 {x}^{2} - 6xy + 7xy - 21 {y}^{2} \big] - \big[27 {x}^{2} - 18x + 12x + 8$

$\implies 2 {x}^{2} - 6xy + 7xy - 21 {y}^{2} - 27 {x}^{2} + 18x - 8$

$\implies - 25 {x}^{2} + 18x + xy - 21 {y}^{2} - 8$

It also can be written as,

$\implies \boxed{ 25 {x}^{2} - 18x - xy + 21 {y}^{2} + 8}$