smithjnana smithjnana

01-04-2020
Mathematics

contestada

7 times a number is 8 less than the square of that number. Find the negative solution

Respuesta :

wegnerkolmp2741o wegnerkolmp2741o

01-04-2020

Answer:

x=-1

Step-by-step explanation:

Let x = the number

7x =x^2 -8

Subtract 7x from each side

7x-7x = x^2 -7x -8

0 = x^2 -7x -8

Factor

0 = (x-8) (x+1)

Using the zero product property

x-8 =0 x+1 =0

x=8 x=-1

We want the negative solution x=-1

Answer Link

Otras preguntas

What value of x makes the equation true ? 4(2x-4)=16

All of the following expressions have a value between 0 and 1, excepta. \frac{(-3^{7})}{(-3)^9}b. 4^{-10}× 4^{6}c. \frac{(8^3)^3}{8^{-4}} d. ( \frac{2}{5} ^{8})

What value of x makes the equation true ? 4(2x-4)=16

In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?a. 2.84 times 10^{-3}b. 5.63 times 10^{-3}c. 7.7 times 10^{-7}d. 12.42 times

In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?a. 2.84 times 10^{-3}b. 5.63 times 10^{-3}c. 7.7 times 10^{-7}d. 12.42 times

jasmines cd collection is 3/8 jazz 1/4 rap and the rest is rock music what is the fraction of rock music

What value of x makes the equation true ? 4(2x-4)=16

In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?a. 2.84 times 10^{-3}b. 5.63 times 10^{-3}c. 7.7 times 10^{-7}d. 12.42 times

find the circumference of a circle whose radius is 15.4cm

find the circumference of a circle whose radius is 15.4cm