Use completing the square to solve the equation x2 - 10x = -8.

Mathematics

2 answers:

Dafna11 [192]3 years ago

8 0

the answer is option 1: x2 - 10x + 25 = 17

Alenkasestr [34]3 years ago

6 0

A. X^2-10x. =-8
To complete the square you get half of -10 and then square that number half of -10 is -5 and -5 times -5 equals positive 25 that would you add to each side

x^2-10x+25=-8+25
17

You might be interested in

Which of the following angles is a right angle?

Lapatulllka [165]

APZ is the correct answer

8 0

3 years ago

Read 2 more answers

Solve the system by elimination -3x+4y=16 3x+y=4

Illusion [34]

X's cancel 5y = 20 y= 4 X=0

7 0

3 years ago

By selling a cow for Rs 144, there is a profit of the same percentage as its cost price. Find the cost price.

hjlf

Answer:

Step-by-step explanation:

<h2><u>☼︎</u><u>Answer:</u></h2>

The cost price of cow = Rs.80

Explanation:

<h2><u>☼︎</u><u>Given :-</u></h2>

By selling a cow for Rs 144, there is a profit of the same percentage as its cost price.

The cost price.

The cost price of cow = Rs.x

<h2><u>☼︎</u><u>Solution :-</u></h2>

$\sf x + x \: of \: x\%= 144 \\ \\ \sf \implies x + \frac{x \times x}{100} = 144 \\ \\ \sf \implies {x}^{2} + 100x - 14400 = 0 \\ \\ \sf \implies x(x - 80) + 180(x - 80) = 0 \\ \\ \sf \implies x + 180 = 0 \\ \\ \sf \implies x = - 180 \\ \\ \sf \therefore \: {\boxed{ \sf \pink{x = 80}}}$