3 years ago

HELP ON A TEST Factor the expression: 4x^2 - 121 (x^2 means x squared)

Mathematics

1 answer:

GenaCL600 [577]3 years ago

8 0

(2x-11)(2x+11) is the answer

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Hey can you please help me posted picture of question

kirill115 [55]

The greatest common factor is such a term which can be taken out common from all the terms of the expression leaving behind no common term in the expression.

In the given expression the greatest common factor is 2x³

$14 x^{5}+10 x^{3} \\ \\ 
=2 x^{3}(7 x^{2} +5)$

So, the answer to this question is option A

5 0

4 years ago

MN and KL are parallel. If JM = 7, MK = 21, and LN = 24, what is NJ? A. 8 B. 3 C. 10 D. 16

Reil [10]

We have from Thales theorem that because the 2 triangles are similar, JM/JK=JN/JL. We have that JN=x, JL=x+24 and that JM=7 and JK=28. Substituting, we get:
x/(x+24)=7/28.
Hence, x/(x+24)=1/4. This leads to 4x=x+24, 3x=24, x=8. We have solved for x=JN and this is equal to 8.

4 0

3 years ago

Read 2 more answers

For f(x)=log(the 2 is below log)2(x), between which two integers does f(40) lie?

Veronika [31]

f(x) = log2 x

f(40) = log2 40

40 = 2^y

2^5 = 32 and 2^6 = 64

so f(40) lies between integers 5 and 6.

4 0

3 years ago