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Usimov [2.4K]
3 years ago
7

Please help me with is. Factor 4x2 + 12x + 5.

Mathematics
2 answers:
boyakko [2]3 years ago
8 0

So for this, I will be factoring by grouping. Firstly, what two terms have a product of 20x² and a sum of 12x? That would be 2x and 10x. Replace 12x with 2x + 10x:

4x^2+2x+10x+5

Next, factor 4x² + 2x and 10x + 5 separately. Make sure that they have the same quantity inside the parentheses:

2x(2x+1)+5(2x+1)

<u>Now you can rewrite the expression as (2x+5)(2x+1) , which is your final answer.</u>

umka2103 [35]3 years ago
6 0

if you meant that then, you would do this. turn it into  4x^2+10x+2x+4. the factor out the 2x which would be 2x(2x+5)+2x+5 and then factor the 2x+5 which would become (2x+5)x(2x+1)

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Eight more than twice a number increased by 3 is equal to 79. Find the number
iren2701 [21]

translate, call the number, n

Eight more than (8+) twice a number increased by 3 (2(n+3)) is equal to (=) 79 (79)


8+2(n+3)=79

minus 8 both sides

2(n+3)=71

divide both sides by 2

n+3=35.5

minus 3 both sides

n=32.5

the number is 32.5

7 0
4 years ago
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How do you evaluate 4x+2 when the x=6
Oduvanchick [21]

Answer:

4x1+2=6

Step-by-step explanation:

4x+2=6

4 times 1 equals 4 (4x1=4)

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4 0
3 years ago
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inessss [21]

Answer:

11

Step-by-step explanation:

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6,  7,  10, 11,13,13,15

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(3 on the left and 3 on the right)

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3 years ago
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In a college parking lot, the number of ordinary cars is larger than the number of sport utility vehicles by 77.3%. the differen
mezya [45]

Let x be the number of ordinary cars

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So x-y=17 ----> first equation

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ordinary cars = SUV + 77.3% of SUV

x = y + 0.773y

x = 1.773y

Now we solve for y

We plug in x=1.773y in first equation

1.773y - y=17

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6 0
4 years ago
Can someone please answer this really quick question?
julia-pushkina [17]

|2x-3|=2x-1

need to consider two cases

(1) 2x-3<0 --> x<3/2

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x=1, and this is <3/2 so that's a valid solution

(2) 2x-3>=0 --> x>=3/2

2x-3=2x-1

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The single solution is x=-1



6 0
3 years ago
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