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Mnenie [13.5K]
3 years ago
13

Solve the equation by factoring! 2x^2 + 5x + 2 = 0

Mathematics
1 answer:
luda_lava [24]3 years ago
5 0

Answer:

answer is down below

Step-by-step explanation:

2x^2 + 5x + 2 =0

multiply 2x^2 x 2 = 4x^2

find two numbers that multiply together to get 4 and add together to make 5

so 4 and 1.

Put them in back in the equation: 2x^2 + x + 4x + 2

split it up in the middle and factorise

so 2x^2 + x becomes x(2x+1)

and 4x+2 becomes 2(2x+1)

<u>so (x+2)(2x+1) is the answer</u>

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Vladimir [108]

Answer:

ki yu mi kyu mi arigato nya ichi ni san nya arigato

8 0
3 years ago
If r is the midpoint of AB and AR=14, then AB=______
skelet666 [1.2K]

Answer:

28

Step-by-step explanation:

The midpoint is halfway, so if half the length is 14 then the full length is 28 (14 × 2 = 28)

Hope this helps!

4 0
3 years ago
8.
Kazeer [188]

Answer:

C. quadratic function; quadratic term: −6x^2; linear term: −17x; constant term: −12

Step-by-step explanation:

Answer:

quadratic function; quadratic term: −6x² ; linear term: −17x; constant term: −12

Step-by-step explanation:

The given function is

We need to expand the RHS to get:

We can see that the degree of this polynomial function is 2 and hence it is a quadratic function.

The quadratic term is -6x²

The linear term is -17x

The constant term is -12

6 0
3 years ago
List 2 terminating decimals and 2 repeating decimals
uysha [10]

.5, .76 are terminating

the square root of two, pi are terminating

3 0
3 years ago
"alan drives an average of 100 miles each week. his car can travel an average of 25 miles per gallon of gasoline. alan would lik
nydimaria [60]
First, list all the given information:
*100 miles/week
*25 miles/gallon
*$4/gallon
*weekly expenditure reduced by $5

The easiest approach to use here is the dimensional analysis. Cancel out like units if they appear both in the numerator and denominator side. Solve first the original cost. The solution is as follows:

100 miles/week * 1 gal/25 miles * $4/gal = $16/week

The reduced cost would be:
16 - 5 = (New average miles/week) * 1 gal/25 miles * $4/gal
New average miles/week = 68.75 miles/week
8 0
4 years ago
Read 2 more answers
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