Question 531099
Please ask 1 question at a time.
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1.	Divide and simplify 3x-27/14 divide by x-9/6x 
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x=9/14
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2.	Find all numbers for which the rational expression is undefined. q^3-2q/q^2-16 
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If the expression is {{{ (q^3-2q)/(q^2-16) }}} then will be undefined for q = -4 or +4 because that will result in division by 0.
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3.	Multiply (5x+4)(7x^2+9x+4)
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35*x^3+73*x^2+56*x+16
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4.	Factor completely 3x^5-27x^4+9x^3
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3*x^3*(x^2-9*x+3)
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5.	Subtract. Simplify, if possible. (4-v/v-7)-(6v-5/7-v)
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(-5*v-23/7)