Question

9.14. 1) 7x2 + x - 8; 3)-2x + 7x - 3;2) 5x2 + 8x + 3;4) 2x2 - 2x + 0,25.​

Answer 1

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Answer 2

It looks like you have a list of quadratic expressions, and you might want to perform various operations on them. Let's go through each expression:

1. 7x^2 + x - 8: This is a quadratic expression in the form of ax^2 + bx + c. In this case, a = 7, b = 1, and c = -8.

2. -2x + 7x - 3: This is not a quadratic expression; it's a linear expression. It's in the form of ax + b. In this case, a = 5, and b = -3.

3. 5x^2 + 8x + 3: This is a quadratic expression. a = 5, b = 8, and c = 3.

4. 2x^2 - 2x + 0.25: This is also a quadratic expression. a = 2, b = -2, and c = 0.25.

If you have specific operations you'd like to perform with these expressions, please provide more details, and I'll be happy to assist you further.