To solve the expression (-9x^2 )+(-2x^2 -3x), we need to combine like terms.
Step 1: Combine the terms with the same exponent of x.
-9x^2 + (-2x^2) = -11x^2
Step 2: Combine the constant terms.
-3x
Putting it all together, the simplified expression is -11x^2 – 3x.
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