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Which Expression is Equivalent to the Given Expression?
Brief Exaplanation:
Step 1: Combine like terms
First, identify and group the like terms in the expression
-2x2+8x−9+4x+7x2+2:
2 terms: - 22 and +72
terms: +8x and +4x
Constant terms: -9 and +2
Next, combine the coefficients for each group:
For 2: -2+7 = 5, resulting in 5x2.
For : 8+4 = 12, resulting in 12.
For constants: -9+2 = 7.
Step 2: Form the final expression
Combine the simplified terms to form the final equivalent expression, typically written in standard form (descending powers of x): 5x2+12... More
