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Vitek1552 [10]
4 years ago
14

What is the complete factorization of x^2+4x-45?​

Mathematics
2 answers:
erma4kov [3.2K]4 years ago
5 0

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

Step-by-step explanation:

You want two numbers that can give you -45 in multiplication and two numbers that can add to 4 and that is -5 and 9.

Otrada [13]4 years ago
4 0

Answer:  (x - 5)(x + 9)

If you have to solve, x=5 or x= -9

Step-by-step explanation: You need two numbers that multiply to be 45.

(could be 3 × 15 or 5 × 9) . The difference between the two factors needs to be 4, the coefficient of the middle term.

9 - 5 =4, so use those.  -45 has a negative sign, so one of the factors must be + and the other -  Since the 4 has the + sign, the larger factor has to be + so the difference will be positive.

So (x -5)(x + 9) are your factors. You can FOIL to be sure

x × x += x² . x × 9 = 9x .  -5 ×  x = -5x . -5 × 9 = -45 .

Combine the x terms: 9x -5x = +4x  

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The interior angles of a quadrilateral are 2x+15 2x-5 3x+75 3x-25 find x and the smallest interior angle largest interior angle
BartSMP [9]

Answer:x=30^{\circ}

Step-by-step explanation:

We know sum of the interior angles of a quadrilateral is 360^{\circ}

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so

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3 0
3 years ago
Write an expression for the sequence of operations described below.
ankoles [38]

Answer:

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Step-by-step explanation:

We have to write the expression for the sequence of operations described in the question.

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Then we will get the expression of \frac{u}{4}.

Then we have to subtract 7 from the result obtained in the previous step.

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