need help on these two questions. Please help ASAP

Question

0

501

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Find the coefficient of $x$ when $(7+8x)-3(2+6x+2x^2)+9(1+3x+4x^2+12x^3)-9(7-x^2-8x^3+13x^4)$ is simplified.

and...

Expand $(2z^2 + 5z - 6)(3z^3 - 2z + 1)$.

Guest Dec 7, 2014

+130511

+5

Best Answer

You should get

6z^5 + 15z^4 -22z^3 -8z^2 + 17z - 6

CPhill Dec 7, 2014

CPhill · Answer 1 · 2014-12-07T05:21:04

You should get

6z^5 + 15z^4 -22z^3 -8z^2 + 17z - 6

Guest · Answer 2 · 2014-12-07T04:57:53

I wrote this a couple of minutes ago, but nobody would respond again! Sorry guys!

CPhill · Answer 3 · 2014-12-07T05:03:54

For the second one......just disribute the first term in the first set of parentheses across each term in the second set of parentheses.

Do the same with the second term......and then with the third term.........combine like terms when you finish......

Guest · Answer 4 · 2014-12-07T05:15:53

What would be the end product?