If a = 1 and b = -2, then (2a^2 + b)(r + y) + (a + b)(r - y) =
Choose the correct choice
A) 0	B) 2x	C) y - r	D) x - y	E) x + y
Putting A=1 and B = -2 =&gt; 2A^2-B=0 ; so the first part of the term is zero   with second term =&gt; (1-2) *(r+y)=y-r =&gt; Smash y - r
<result>C</result>
If a = 1 and b = -2, then (2a^2 + b)(r + y) + (a + b)(r - y) =