Let the polynomials be:
P1(x)=3x2−7x+4,
P2(x)=−5x2−4x+2,
P1(x)+P2(x)=	Choose the correct choice from the following answers.
A) 2x2 + 11x - 7
B) -2x2 - 11x + 6
C) -2x2 - 11x + 6
D) 2x2 - 9x + 7
E) None of these
Solution:   P1(x)+P2(x)=(3x2−7x+4)+(−5x2−4x+2)=P1(x)+P2(x)=(3x2−7x+4)+(−5x2−4x+2)=   3x2−7x+4−5x2−4x+2=3x2−7x+4−5x2−4x+2=   −2x2−11x+6   Answer -2x2 - 11x + 6
<result>B</result>
Let the polynomials be:
P1(x)=3x2−7x+4,
P2(x)=−5x2−4x+2,
P1(x)+P2(x)=