SEANPRITZELJRGO SEANPRITZELJRGO Mathematics Answered Simplify. (5x−2+3x2)+(4x+3) Responses 12x4+1 12 x to the power of 4 end power plus 1 3x2+9x+1 3 x squared plus 9 x plus 1 3x2+9x−1 3 x squared plus 9 x minus 1 3x2+x+5