"PEDMAS" says you have to do multiplication before adding, and subtracting
that means you have to do 3 x 3 first>> 3 + 9 - 3 + 3 then you can go ahead and add 3 with 9>> 12 - 3 + 3minutes 3 plus 3 just cancel each other so,
the answer is 12
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X2+3x+x+3=x(x+1)+3(x+1)=(x+3)(x+1)
x + x + 1 + x + 2 + x + 3 = -144x + 6 = 144x = 8x = 2
x + 3 + 10 = x + 13
x+3-x= x-x+3 = 3
(x + 3)(x + 3)