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Vaselesa [24]
3 years ago
8

4x (3x + 13) Help me with this please

Mathematics
2 answers:
Illusion [34]3 years ago
7 0

Answer:

64x

Step-by-step explanation:

4x*3x is 12x

13*4x is 52x

52+12 is 64

64x

kotegsom [21]3 years ago
5 0
The answer is 64x hope this helps
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When asked to factor the x^2-121 a student gives the answer (x-11)(x-11) what is wron with this answer?
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Given expression is x² - 121

This is called Difference of Squared terms, we have a formula that is given as :-

a² - b² = (a - b) · (a + b)

Now using the above formula in the given expression, we get :-

x² - 121

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here a = x and b = 11

x² - (11)² = (x - 11) · (x + 11)

but it says that student gave the answer as (x - 11) · (x - 11).

So, student's answer should be (x - 11) · (x + 11) instead of product of two (x - 11) terms.

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