please help 20 points!!!!!!!!!!!!!!!!!!!!!!!!!!!?

Question

Please help with the following math problems. Each question is worth 1 point.
Question 1: Multiply the following expression:
–3x²(6x² + 2x – 3) – 18x² – 6x + 9 – 18x⁴ – 6x³ + 9x².
Question 2: Multiply:
(5x)(3x)(6x² – 1)
a) 90x³ – 15x
b) 48x³ – 8x
c) 48x⁴ – 8x²
d) 90x⁴ – 15x²  
Question 3: Add the following expressions:
(3x² + 4x + 7) + (x² – 6x – 5)
a) 3x² – 2x + 2
b) 4x² – 2x + 2
c) 4x² – 10x + 2
d) 3x² + 2x – 2  
Question 4: Which of the following represents the area of a rectangle whose length is 3x + 5 and width is x – 2?
a) 3x² – x – 10
b) 3x² – 10
c) 3x² + x – 10
d) 3x² – 11x – 10  
Question 5: Multiply:
(x – 8)(x + 12)
a) x² – 4x – 96
b) x² – 20x – 96
c) x² – 96
d) x² + 4x – 96  
Question 6: Multiply:
(3x – 5)²
a) 9x² – 30x + 25
b) 6x² – 10
c) 9x² – 25
d) 9x² – 15x + 25  
Question 7: Multiply:
(2x² + 3x – 6)(x – 1)
a) 2x³ + 3x² – 6x + 6
b) 2x³ – 18x² – 3x + 6
c) 2x³ – 12x² + 3x + 6
d) 2x³ + x² – 9x + 6  
Question 8: Subtract:
(2x³ + 9x – 8) – (4x² – 15x + 7)
a) 2x² – 6x – 1
b) –2x² + 24x – 15
c) 2x³ – 4x² – 6x – 1
d) 2x³ – 4x² + 24x – 15  
Question 9: Subtract:
(4x³ + 2x² + 3x + 8) – (x³ – 5x² + 11x – 9)
a) 3x³ – 3x² + 14x – 1
b) 3x³ + 7x² – 8x + 17
c) 3x³ – 3x² – 8x – 1
d) 3x³ + 7x² + 14x + 17  
Question 10: Add:
(7x⁶ + 10x² – 10) + (3x⁶ – 6x³ + 4)
a) 10x⁶ + 4x² – 6
b) 10x⁶ + 4x³ – 6
c) 10x⁶ – 6x³ + 10x² – 6
d) 10x⁶ + 10x² – 6x³ + 6

Anonymous · Accepted Answer

(it took me time to figure what you mean by the x to the power... :P) 
Answers:
Q1. -18x^4 - 6x^3 + 9x^2
Q2. 90x^4 - 15x^2
Q3. 4x^2 - 2x + 2
Q4. 3x^2 - x - 10
Q5. x^2 4x - 96
Q6. 9x^2 30x +25
Q7. 2x^3 + 3x^2 - 6x + 6
Q8. 2x^3 + 24x - 4x^2 - 1
Q9. 3x^3 + 7x^2 - 8x + 17
Q10. 10x^6 - 6x^3 + 10X^2 - 6 
Hope these will help.  ?

Anonymous

please help 20 points!!!!!!!!!!!!!!!!!!!!!!!!!!!?

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