Question

1. (3x^2-8x-7) -(5x^2+2)

2. (3x+10)(9x-9)
3. -6x^2-96x-360
4.(1-8i)+(7-3i)

Answer 1

[AI-generated answer — Bot GPT 3.5]

1. 3x^2 - 8x - 7 - 5x^2 - 2

= (3x^2 - 5x^2) + (-8x - 2) - 7
= -2x^2 - 8x - 9

2. (3x + 10)(9x - 9)
= 3x * 9x + 3x * (-9) + 10 * 9x + 10 * (-9)
= 27x^2 - 27x + 90x - 90
= 27x^2 + 63x - 90

3. -6x^2 - 96x - 360

4. (1 - 8i) + (7 - 3i)
= 1 + 7 - 8i - 3i
= 8 - 11i