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morpeh [17]
3 years ago
6

How to factor trinomial?

Mathematics
2 answers:
Evgesh-ka [11]3 years ago
3 0

Answer:

(x+5)(X+9)

Step-by-step explanation:

This is a monic quadratic trinomial. you need to find the product, which is the first times the last (1x times 45 which just becomes 45) and the sum, which is the middle number (14)

you need to find factors that ADD to get 14 and MULTIPLY to get 45

which in this case is 9 and 5. you then put it into this form (x+  )(x+  )

and u put the numbers in each one

(x+5)(x+9)

i hope this was helpful, pls give me brainliest    

siniylev [52]3 years ago
3 0

Answer:(x+5)(x+9)

Step-by-step explanation:

x^2+14x+45

We first find two numbers whose product is +45 and whose sum is 14.the two numbers are 9 and 5.we then remove +14x from the equation and replace it with +9x+5x

x^2+9x+5x+45

On factorising we get

x(x+9)+5(x+9)

We then factor out (x+9) again

(x+5)(x+9)

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What is the solution (x,y) to the system of equations given? 2 x + 4 y = − 16 2x+4y=−16 2 y − x = = 16 2y−x==16
alisha [4.7K]

Answer:

(-12,2)

Step-by-step explanation:

2x + 4y = -16

2y - x = 16

Multiply the bottom part by 2.

2x + 4y = -16

4y - 2x = 32

Add the equations and the answers to the equations up, and they will equal each other.

(2x + 4y) + (4y - 2x) = -16 + 32

8y = 16

y = 2

Plug y = 2 to the 2nd equation.

2*2 - x = 16

4 - x = 16

Subtract 4 from both sides.

-x = 12

Multiply both sides by -1.

x = -12

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4 years ago
The legs of a right triangle are x + 1 and x + 4. What is the area of the triangle?
Dominik [7]

Answer:

(x^2 + 5x + 4) : 2

Step-by-step explanation:

5 0
3 years ago
Find the average rate of change of f(x)=2x-1 from x=-1 to x=2
MrMuchimi

The average rate of change from x = -1 to x = 2 is 2

<u>Solution:</u>

Given function is:

f(x) = 2x - 1

We have to find the average rate of change from x = -1 to x = 2

<em><u>The average rate of change is given as:</u></em>

\text {Average rate of change}=\frac{f(b)-f(a)}{b-a}

<em><u>The average rate of change from x = -1 to x = 2 is given by formula:</u></em>

\text {Average rate of change}=\frac{f(2)-f(-1)}{2-(-1)}\\\\\text {Average rate of change}=\frac{f(2)-f(-1)}{3}

<em><u>Find f(2) and f( - 1)</u></em>

<em><u>Substitute x = 2 in given function</u></em>

f(2) = 2(2) - 1 = 4 - 1 = 3

<em><u>Substitute x = -1 in given function</u></em>

f( - 1) = 2(-1) - 1 = -2 - 1 = -3

<em><u>Substitute the values in above formula,</u></em>

\text {Average rate of change}=\frac{3-(-3)}{3}=\frac{6}{3}=2

Thus average rate of change from x = -1 to x = 2 is 2

3 0
3 years ago
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3 years ago
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