how do i solve this problem

Question

p(x)=x²+2x²-7x+5; a = 2

Answer 1

3x^2 -7x + 5 = 2

3x^2 -7x +3 = 0

x = 7/6 +/- (1/6)sqr(49-4(9))

x= (7+/- sqr13)/6

or maybe you meant

x^3 +x^2 -7x +5 = 0

which is often more difficult to solve given a 3rd degree polynomial

but try an easy integer such as x=1

1 +1 -7 +5 = 0

0=0

x-1 is a factor

divide x-1 into x^3 +x^2 -7x +5 to get an easily solved quadratic equation

quotient is x^2 +2x-5 =0

x= -1 +/- .5sqr(4+20)

x = (-1+/-2sqr6)/2

= -.5 +/-sqr6

although it isn't clear what you mean by a=2