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.All we need to do is factor the variable 'x' out of ''x^2 + 3x'' to get the answer, x(x + 3) ~Next we get the other equation, -2x^2 + 9x + 5 or 
.Simply add and subtract the second term to the expression and factor by grouping to get the answer, −(2x + 1) (x − 5)~Finally, we take both answers from both equations and simplify the expression, and get the final answer, −x^2 + 12x + 5~
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Find the sum of x^2 +3x and -2x^2+9x+5...
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