4 years ago

What is 12x3-9x2-4x+3

1 answer:

4 0

Simplified would be : (3x^2 - 1) * (4x - 3)

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Lilit [14]

Answer:

-4,-1

i have to put 20 character so here is 20 characters

6 0

3 years ago

KATRIN_1 [288]

Answer: The age of the twins is 10 years.

Step-by-step explanation:

Suppose the age of older sister be x

Let the age of twins sister be x-9, as they are born after 9 years.

Product of their ages be

$x(x-9)(x-9)\\\\=x(x^2-18x+81)\\\\=x^3-18x^2+81x$

Sum of their ages will be

$x+x-9+x-9\\\\=3x-18$

According to question,

$1861+3x-18=x^3-18x^2+81x\\\\x^3-18x^2+81x-3x+18-1861=0\\\\x^3-18x^2+78x-1843=0\\\\x=19$

So, Age of older sister will be 19 years.

Age of the twins will be

$19-9=10\ years$

Hence, the age of the twins is 10 years.

3 0

3 years ago

bezimeni [28]

2x+1=13 x=6 so an ok answer would be: 2x+10=40 x=15

6 0

4 years ago

julsineya [31]

15f -8f+ 13= 55
⇒ 7f+ 13= 55
⇒ 7f= 55- 13
⇒ 7f= 42
⇒ f= 42/7
⇒ f=6

Final answer: f=6~

8 0

3 years ago

FrozenT [24]

The end result would be ( 11/5 , -15/5)

8 0

3 years ago