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disa [49]
3 years ago
14

AYUDAAAAAAAes un examen que era para dos dias atraaasSOLO LA 4 la 5 y la 6 porfaa

Mathematics
1 answer:
tigry1 [53]3 years ago
4 0
Answer: okay what do you need help with
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Factorise x squared + 4x + 3 ​
olganol [36]
<h3>Answer:  (x+1)(x+3)</h3>

===================================================

Explanation:

Let's assume it factors into (x+a)(x+b)

The goal is to find the two numbers a and b.

FOIL out (x+a)(x+b) to get x^2+(a+b)x+ab

Note how a+b is the middle term and ab is the last term.

In the original expression, 4 is the middle term and 3 is the last term.

So we need to find two numbers that

  • add to 4
  • multiply to 3

There are two ways to multiply to 3 and they are

  • 1 times 3 = 3
  • -1 times -3 = -3

But only the first way has the factors add to 4. So that means a = 1 and b = 3.

Therefore (x+a)(x+b) = (x+1)(x+3)

And x^2+4x+3 = (x+1)(x+3)

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Why does fast- moving grader erosion and then slow- moving water?
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Is theres 10 birds and i shoot 1 how many is there left?
bazaltina [42]
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Write the subtraction problem below as an equation
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The line segment AB is shown below. Which transformation of AB will produce a line segment A’B’ that is parallel to AB
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Answer:

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