Question

5x-2x square-8,8x square-7x-9,3+7x square-2x add​

Answer 1

Answer:

$=(5x-2{x}^{2}-8)+(8{x}^{2}-7x-9)\\ + ( 3 + 7 {x}^{2} - 2x)$

$=5x-2 {x}^{2} -8 + 8 {x}^{2}- 7x - 9 \\ + 3 + 7 {x}^{2} - 2x$

$=8 {x}^{2}+7 {x}^{2}- 2 {x}^{2} + 5x - 7x \\ - 2x - 8 - 9 + 3$

$= 13 {x}^{2} - 4x - 14$

Answer 2

Answer:

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