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nayelimoormann
06.05.2021 •
Mathematics
A) Here are the first five terms in a Fibonacci sequence.
1 5 6 11 17
Write down the next two terms in the sequence.
(1)
b) The fourth and fifth terms of a different Fibonacci sequence
are respectively 37 and 60.
Work out the first term in this sequence.
[2]
c) The first and third terms in the following Fibonacci sequence are x and y.
Write down algebraic expressions for the second, fourth and fifth terms.
Х
y
[3]
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Ответ:
h
Ответ:
Option (a) is correct.
fully factored form of given expression
is ![4a^2(8a+3)](/tpl/images/0248/4745/6c96f.png)
Step-by-step explanation:
Given expression :![32a^3+12a^2](/tpl/images/0248/4745/1c7db.png)
We have to write the given expression in factored form and choose a correct option out of given options.
Factorization is the process of writing the an expression in form of factors such that when we multiply we get the same expression.
Consider the given expression
consider first term
can be written as ![32a^3=2\cdot 2 \cdot 2 \cdot 2 \cdot 2\cdot a \cdot a \cdot a](/tpl/images/0248/4745/b625f.png)
Similarly ,
can be written as ![12a^3=2\cdot 2 \cdot 3 \cdot a \cdot a](/tpl/images/0248/4745/ad49e.png)
Now, consider the given expression![32a^3+12a^2](/tpl/images/0248/4745/1c7db.png)
taking common terms out of the both factors, we have![32a^3+12a^2=4a^2(8a+3)](/tpl/images/0248/4745/7c7c5.png)
Thus, option (a) is correct.