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3 years ago

6

Monomials that have the same variable raised to the same power, Only the coefficients of like terms can be different. A Exponent

s BIrrational Number C Rational Number D Like Terms

1 answer:

erma4kov [3.2K]3 years ago

5 0

Answer:

B

Step-by-step explanation:

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What is the eighth term in the sequence x+3, - 2x^2 - 6x, 4x^3 +12x^2

Anastasy [175]

Answer:

$a_8=-128x^8-384x^7$

Step-by-step explanation:

The terms of the sequence are:

$x+3,-2x^2-6x,4x^3+12x^2,...$

We can rewrite the terms in factored form to get;

$x+3,-2x(x+3),4x^2(x+3),...$

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Therefore the first term of this geometric sequence is $a_1=x+3$ and the common ratio is $r=-2x$ .

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$a_8=(x+3)(-2x)^{8-1}$

$a_8=(x+3)(-2x)^{7}$

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$a_8=-128x^8-384x^7$

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