1.P =4b^3-2b-9 Q = b^2-6b+7 R = b^3-2 Then P+Q = ___ b^3+ ____b^2+ ____ b+____ a

Question

1.P =4b^3-2b-9
Q = b^2-6b+7
R = b^3-2
Then P+Q = ___ b^3+ ____b^2+ ____ b+____
and R(P+Q) = ____b^6+ ____ b^5+_____ b^4+ ____b^3+ ____b^2
+ ____b+____

2. Evaluate the expression 8^-4/3
[NOTE: Your answer cannot be an algebraic expression. ]

3. Evaluate the expression 4^0/4^2
[NOTE: Your answer cannot be an algebraic expression. ]

4.The expression ((2^2)(2^2)(2^-2)/((sqrt4^2)(2^5)(2^-3))
equals 2^n where n is:

5.The experession (x^5y^2z^2x^-2/x^5y^2z^2y^4)^-3 equals x^r y^r z^t

where r, the exponent of x is:____
and s, the exponet of y, is____
and finally t, the exponent of z, is____
[NOTE: Your answer cannot be an algebraic expression. ]

Explanation / Answer

1.P =4b^3-2b-9
Q = b^2-6b+7
R = b^3-2
Then P+Q = __4_ b^3+ __1__b^2+ __-8__ b+_-2___
and R(P+Q) = _4___b^6+ _1___ b^5+__-8___ b^4+ _-10___b^3+ _-2___b^2
+ _16___b+__4__

2. Evaluate the expression 8^-4/3
(2^3 ) ^ -4/3 = = 2^-4 = 1/2^4 = 1/16 = 0.0625

3. Evaluate the expression 4^0/4^2
4^0/4^2 = 1/16 = 0.0625

4.The expression ((2^2)(2^2)(2^-2)/((sqrt4^2)(2^5)(2^-3))
equals 2^n where n is:

2^2 / 4*4 = 4/16 = 1/4 = 0.25

5.The experession (x^5y^2z^2x^-2/x^5y^2z^2y^4)^-3 equals x^r y^r z^t

where r, the exponent of x is:__6__
and s, the exponet of y, is__-12__
and finally t, the exponent of z, is_0___

Related Questions

Navigate

• Browse (All)
• Browse 1
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.