Question

find the coefficient of x^2 in the expansion of (x^2+2x+3)+(x^2-2x+3)^2

Answer 1

Answer:

0 is your answer user

Step-by-step explanation:

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Answer 2

Answer:

11

Step-by-step explanation:

Finding the coefficient of x²

Solution 1, expanding to find:

• (x²+2x+3)+(x²-2x+3)²= x⁴-4x³+11x²-10x+12

Solution 2, calculation as follows:

• x² in the first parentheses = 1

• x² in the second parentheses when expanded= 2*1*3+(-2)²= 10
• total= 1+10= 11

Answer: x² has coefficient of 11