p(x)= 2x^4+3x^3-x^2-4x+3 tntukan nilai a jika 2p(1) - 5=3 tolong bantu

P(x)=2x^4 + 3x^3 - x^2 - ax + 3
2p(1) - 5 = 3
2p(1) = 8
p(1) = 4

2(1)^4  + 3(1)^3 - (1)^2 - a(1) + 3 = 4
2 + 3 - 1 - a + 3 = 4
a = 3