Question

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

Answer 1

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

Hope it helps

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Answer 2

Question:

Simplify the following expressions :-

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

Answer:

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

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,

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