Line 3
since he added which is against the order of opreation rule he was supposed to multiply first then add
again what he was supposed to do is
Line 2:21+5+6(2)
Line 3:21+5+12
Let the numbers be X and X+1.
X+2(X+1)=29
X+2X+2=29
3X=29-2
X=27/3
X=9.
Thus, the Numbers are therefore 9 and 9+1=10
i.e 9 & 10.
Thus, when 9 is added to (2*10=20), the result is 29.
Answer:
(x-y)(x-y-1)
Step-by-step explanation:
1.(x - y)² - x + y = (x - y)² - (x - y )
2.(x-y) [( x-y) - ( 1 ) ]
3.(x-y)(x-y-1)