All categories

2 years ago

I donot understand at all

Mathematics

1 answer:

loris [4]2 years ago

8 0

Answer:

sorry i dont understand either!!!

Step-by-step explanation:

You might be interested in

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

erma4kov [3.2K]

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.

5 0

2 years ago

Read 2 more answers

Write the sum as a product simple simplify the product (-2)+(-2)+(-2)+(-2)

iren [92.7K]

(-2)+(-2)+(-2)+(-2)
=-2-2-2-2
= -8

3 0

2 years ago

A challenge to all math experts...

liq [111]

Answer:

Step-by-step explanation:

<h3>Given</h3>

(x + $\sqrt{1 + x^2}$ )(y + $\sqrt{1 + y^2}$ ) = 1
(x+y)² = ?

<h3>Solution</h3>

<u>Let's make substitution as:</u>

(x + $\sqrt{1 + x^2}$ ) = m

then

(y + $\sqrt{1 + y^2}$ ) = 1/m

<u>Solving the first equation for x and the second one for y:</u>

(x + $\sqrt{1 + x^2}$ ) = m
$\sqrt{1 + x^2}$ = m - x
1 + x² = (m - x)²
1 + x² = m² - 2mx + x²
2mx = m² - 1
x = (m² - 1)/2m

And

(y + $\sqrt{1 + y^2}$ ) = 1/m
$\sqrt{1 + y^2}$ = 1/m - y
1 + y² = 1/m² -2y/m + y²
1 = 1/m² - 2y/m
m² = 1 - 2my
2my = 1 - m²
y = (1 - m²)/2m
y = - (m² - 1)/2m

x + y = (m² - 1)/2m - (m² - 1)/2m = 0

<u>Therefore:</u>

(x+y)² = 0

Answer is zero

8 0

3 years ago

What is the equation of a line perpendicular to the x axis that goes<br> through (5,5)?*

Mars2501 [29]

Answer:

To understand the equation of a line which is perpendicular to x axis, let us consider the figure given below. In the figure above, clearly the line L is perpendicular to x-axis and passing through the value "c" on x- axis. Hence, the equation of a line perpendicular to x axis is x = c.

8 0

2 years ago

Can someone please help me on 1-4

disa [49]

Answer:

Step-by-step explanation:

8 0

2 years ago