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Black_prince [1.1K]
2 years ago
11

Question 5 (1 point)

Mathematics
2 answers:
Ivanshal [37]2 years ago
6 0

a.

\huge{{x}^{2}  + 6x + 9}

<em><u>Step-by-step explanation:</u></em>

Using Binomial Theorem:

\boxed{{(a+b)} ^n= \sum_{k=0}^{n}\binom{n}{k} a^{n-k}b^{k}}

.

.

.

(a+b) ^2 =a^{2} + 2ab +b^{2}

The answer seems to be x^{2} + 6x + 9...

fredd [130]2 years ago
4 0

Answer:

a)   x² + 6x + 9

Step-by-step explanation:

When we square something, we multiply it by itself:

⇒ (x + 3)² = (x + 3)(x + 3)

Using the FOIL method:  (a + b)(c + d) = ac + ad + bc + bd

⇒ (x + 3)(x + 3) = x² + 3x + 3x + 9

                        = x² + 6x + 9

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iren2701 [21]

Answer:

The sum of all the sides to this quadrilateral will equal a total of 20 inches, so you set up the equation:

2 + 2x + 7 + x + 2 = 20

Solve for x by combining like terms;

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Which simplifies to;

11 + 3x = 20

Get rid of constants;

-11          -11

3x = 9

Isolate x by getting rid of it's coefficient;

/3  /3

<u>x = 3</u>

Now, to find the length of PQ, we plug in the value of x(3) into the equation that contains the line PQ.

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Now, to find the length of RS, we plug in the value of x(3) into the equation that contains the line RS.

2x

2(3)

= <u>6 inches.</u>

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<span>9:6 simplified to 3:2
</span>
The ratio is 3:2
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Step-by-step explanation:

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