7x + 3
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5x - 3 + 2x + 7 = ?7x + 5 = ?
2x2+5x+3 = (2x+3)(x+1) when factored
2x +1 = 5x-2 2x +3= 5x 3 = 3x x=1
Depending on how the problem is written. 2x + 3 - 5x + 10 -3x + 13 ■ Or... 2x + 3 - (5x + 10) -3x - 7 ■ I think you want the second answer.
(2x+3)/(10x2+21x+9)Factor the quadratic expression in the denominator:(2x+3)/(5x+3)(2x+3)which becomes:1/(5x+3) or (5x+3)-1