How does 10 - 4 help you solve 30 - 4
2 answers:
Answer:
The value of given expression is 26.
Step-by-step explanation:
We need to solve 30 - 4 using 10 - 4.
First of all solve 10 - 4.
.... (1)
Consider the given expression
30 - 4
Split the number 30 as the sum 10 and a number.
(20 + 10) - 4
It can be written as
(20 + 10) + (-4)
Using associative property of addition.
20 + (10 + (-4))
20 + (10 - 4)
Using equation (1) we get
20 + 6
26
Therefore the value of given expression is 26.
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The factored form of the considered polynomial is
If the given quadratic expression is of the form
then its factored form is obtained by two numbers alpha( α ) and beta( β) such that:
Then writing b in terms of alpha and beta would help us getting common factors out.
For the considered polynomial, we've got the quadratic expression as:
Comparing this with , we get:
- a = 1 (since
)
- b = 11
- c= 24
Therefore, we have : ac = c = 24
Two numbers whose multiplication gives 24 and and whose addition gives 11.
24 =
If we take first three 2s, and 3, then:
Thus, we need to write 11 in the middle in terms of 8 and 3:
Thus, the factored form of the considered polynomial is
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