Question

4x+6y+1+6x-2y+2




(8x²-4x+7)-2x²+7x+2)

Answer 1

$a) 4x+6y+1+6x-2y+2=4x+6y+6x-2y+1+2= \\ \\ =10x+4y+3$

b)$(8x^2-4x+7)-2x^2+7x+2)= \\ \\ 8x^2-4x+7-2x^2+7x+2= \\ \\ =8x^2-2x^2-4x+7x+2= \\ \\ 6x^2+3x+2$

Answer 2

a)=  4x + 6y + 1 + 6x - 2y + 2

= 4x + 6x + 6y - 2y + 1 + 2

= 10x + 4y + 3
*****************************************
b)

= (8x² - 4x + 7) - (2x² + 7x + 2)

= 8x² - 4x + 7 - 2x² - 7x - 2

= 8x² - 2x² - 4x - 7x + 7 - 2

= 6x² - 11x + 5