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Ronch [10]
3 years ago
14

When asked to factor the trinominal 9x^2+12x+4 a student gives the answer (3x-2)(3x-2) what is one thing wrong with this answer

Mathematics
2 answers:
Alekssandra [29.7K]3 years ago
6 0

Answer:

(3x+2)(3x+2)

Step-by-step explanation:

9x^2+12x+4 =9x² + 6x + 6x + 2*2

= 3x ( 3x + 2) + 2(3x+2)

= (3x + 2)(3x+2)

So the sign should be positive

Ludmilka [50]3 years ago
5 0

Answer:

Because if you were to distribute it back into the original equation you were given it would distribute back into 9x^2-12x+4. Your signs are wrong. So change it to (3x+2) (3x+2)

Step-by-step explanation: change your signs in your answer you gave to positive. :)

You might be interested in
Solve (-7)^2+5(5^2)-(20-10)
Andreyy89

Answer:

164

Step-by-step explanation:

(-7)^2 + 5 • 25 - 10

49 + 5 • 25 - 10

49 + 125 -10

164

8 0
3 years ago
7/8 - 1/4 - 1/2= ??
madreJ [45]

Step-by-step explanation:

We can break this up into pieces, first we do, 7/8 - 1/4, find the least common denominator which is 8, so the equation will be 7/8 - 2/8, which we can now subtract and will give us, 5/8, now that we have done that, we can do 5/8 - 1/2. Since we know that half of 8 (our denominator) is 4. Then the equation would be 5/8 - 4/8, which brings us to 1/8 as our final answer.

Cheers!

7 0
3 years ago
For a dinner party Abraham is creating Individual Serving of starters. He has nine carrot sticks and 18 Celery sticks if he want
alexandr402 [8]

Answer:  9\ servings

Step-by-step explanation:

You know that Abraham has 9 carrot sticks and 18 Celery sticks.

In order to calculate the greatest number of servings Abraham can create, you need to find the Greatest Common Factor (GCF).

The procedure to find the Greatest common factor is:

 1. Descompose 9 and 18 into their prime factors.

 2. Multiply the commons factors with their lowest exponents.

Then, in this case you get:

9=3*3=3^2\\\\18=2*3*3=2*3^2

GCF=3^2=9

Therefore, the greatest number of servings Abraham can create is:

9\ servings

6 0
3 years ago
Last week Macy ran 4 times as many miles as Jackson. They ran a total of 20 miles. How many miles did Macy run? how many morr mi
WITCHER [35]
Macy 5 miles because she ran 4 times more than Jackson in relation to Jackson ran 5 mile, this problem can oftenly be seen as
j = 20 \div 4
which would end up in the answer being 5 which is the right answer while someone else can see it as
j = 20 - 4
which would equal 16 which is incorrect because the problem didn't say that Jackson ran one mile nor 4 miles which would be 4*4 or 16 when the correct answer is 20/4=5 because 4*5=20
5 0
3 years ago
I can’t find the area
evablogger [386]
Divide it into chunks of area you can find. One way to divide it is
.. a rectangle 2 mi x 5 mi at upper left.
.. a rectangle 8 mi x 6 mi down the middle
.. a rectangle 3 mi x 4 mi at lower right
.. a triangle 5 mi x 6 mi at lower left

Then the sum of areas is
.. (2 mi)*(5 mi) +(8 mi)*(6 mi) +(3 mi)*(4 mi) + (1/2)*(5 mi)*(6 mi)
.. = 10 mi^2 +48 mi^2 +12 mi^2 +15 mi^2
.. = 85 mi^2
4 0
3 years ago
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