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vredina [299]
3 years ago
14

11. factor the expression. k2 – 16h2 (k 4h)(k – 4h) (k – 4h2)(k 4) h2(k 4)(k – 4) (k 4h)(k 4h)

Mathematics
2 answers:
ANEK [815]3 years ago
7 0
Use\ a^2-b^2=(a-b)(a+b)\\\\k^2-16h^2=k^2-4^2h^2=k^2-(4h)^2=(k-4h)(k+4h)
RoseWind [281]3 years ago
7 0

Answer:

The correct option is 1.

Step-by-step explanation:

The given expression is

k^2-16h^2

It can be rewritten as

k^2-(4h)^2               .... (1)

The formula for difference of squares:

a^2-b^2=(a-b)(a+b)

In equation (1), a=h and b=4h. Using the above formula we get

k^2-(4h)^2=(k-4h)(k+4h)

The factor form of given expression is (k-4h)(k+4h). Therefore the correct option is 1.

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4 0
3 years ago
I need help with this question for homework.
Leviafan [203]
Here's the method on the first one (36)

The ratio is \frac{72}{126}=\frac{36}{63}=\frac{12}{21}=\frac{4}{7}, hence if we call xthe number below 36, we will have \frac{36}x=\frac{72}{126}=\frac{4}7 hence x=\frac{36\cdot7}4=63

I_72__I_36_I_24_I_12_I
<span>I_126_I_63_I_42_I_21_I

</span>
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ycow [4]
It’s 0





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