Im having trouble with multiplication of polynomial by a monomial can someone please teach/answer my homework??? I really need it for tomorrow I also asked my classmates in their sns accounts but they also said that they didn't understand our lesson

4(-7y+9x-3z)

-8s(s-12)

9x(2xsquare+4x+7)

2

Answers

2014-11-16T17:24:35+08:00
-28y + 36x -12z

-8s² + 96
18x³ + 36x² + 63x
1 5 1
2014-11-16T18:41:22+08:00

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4(-7y+9x-3z) \\  \\ Use \ the \ distributive \ method . \\  \\ -7y(4)+9x(4)-3z(4) \\  \\ So \ you'll \ have \ the \ product \ of; \\  \\ \boxed{-28y+36x-12z} \\  \\The \ second \ one \ is, -8s(s-12) \\  \\ Use \ the \ simple \ method; \\  \\ -8s(s)-8s(-12) \\  \\ \boxed{-8 s^{2} +96s} \\  \\ The \ last \ one \ is, \\  \\ 9x(2 x^{2} +4x+7) \\  \\ Use \ the \ distributive \ method;2 x^{2} (9x)+4x(9x)+7(9x) \\  \\ \boxed{18 x^{3}+36 x^{2} +63x } \\  \\ Hope \ You'll \ Understand \ It:) \\ Domini
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