3 years ago

Click the picture which is the correct answer?Make sure the answer is actually right really need help !

Mathematics

1 answer:

Neporo4naja [7]3 years ago

5 0

H = 2(A/a+b) is the correct formula

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Which of the following would best be solved using factoring the difference of squares? 2² + 3x - 10 = 0 O 3r² + 12x = 8 2³ +52²

IgorC [24]

Given: Different equations

To Determine: Which would be best solved using difference of two squares

Solution

The factorization of a difference of two squares is given below

$a^2-b^2=(a-b)(a+b)$

Let us examine each of the given equation

$\begin{gathered} x^2+3x-10=0 \\ x^2-2x+5x-10=0 \\ x(x-2)+5(x-2)=0 \\ (x-2)(x+5)=0 \end{gathered}$ $\begin{gathered} 3x^2+12x=8 \\ 3x^2+12x-8=0 \end{gathered}$ $\begin{gathered} x^3+5x^2-9x-45=0 \\ x^2(x+5)-9(x+5)=0 \\ (x+5)(x^2-9)=0 \\ x^2-9=x^2-3^2=(x+3)(x-3) \\ Therefore \\ (x+5)(x+3)(x-3)=0 \end{gathered}$ $\begin{gathered} x^2-25=0 \\ x^2-5^2=0 \\ (x+5)(x-5)=0 \end{gathered}$

From the above,

$\begin{gathered} x^3+5x^2-9x-45=0 \\ AND \\ x^2-25=0 \end{gathered}$

The two equation above can be solved by difference of two square, but the equation below is the easiest solved using differnce of two square

x² - 25 = 0

3 0

1 year ago

A number, n, is greater than 22.

AnnyKZ [126]

Then it would be >
_

5 0

3 years ago

X² +8x +15 ÷ x²+ 6x +5<br>

sineoko [7]

<h3>⚘Refer to the attachment!</h3>

7 0

3 years ago

in a Recipe, 125 ml of milk is used for every half litre of water what is the ratio of milk to water

yanalaym [24]

Answer:

1 : 4

Step-by-step explanation:

half litre = 500 ml

Milk : water = 125 : 500

= 125 ÷ 25 : 500÷25

= 5 : 20

= 1 : 4

7 0

3 years ago

What’s is 13.75 of 2/5

ivanzaharov [21]

Answer:

5.5

Step-by-step explanation:

Of means multiply

13.75 * 2/5

27.5/5

5.5

3 0

3 years ago

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