Solve for x in the equation 3x2-18x+5=47

Mathematics

1 answer:

Rudiy273 years ago

5 0

(3 times 2)-18x+5=47

6-18x+5=47

6-18x=42 subtract 5 from both sides

-18x=36 subtract 6 from both sides

x=negative 2 Divide by your X

You might be interested in

How do you solve -2/3x + 5 = 20 - x

Monica [59]

-2/3x + 5 = 20 - x

subtract 5 from each side

-2/3 x = 15 -x

add x to each side

-2/3 x +x = 15

get a common denominator of 3 for the x terms

-2/3x + 3/3 x =15

combine like terms

1/3 x = 15

multiply by 3 on each side

x = 45

Answer: x=45

8 0

4 years ago

Find the two square roots of 121 (write answer using the word “and” to separate them)

Aneli [31]

Answer:

11 and 11

Step-by-step explanation:

brainliest^:)

8 0

3 years ago

Read 2 more answers

please help, this is an algebra 2 question :) I attached the problem in a photo - simplify the following expression

MrRa [10]

Answer:

$\frac{x^2+19x-56}{4x^2-32x}$

Step-by-step explanation:

To add two fractions we need a common denominator. Just by looking at the two, there are no common factors. This means the denominator would be the product of the two: 4x(x-8). In order to obtain this, we multiply the first fraction by (x-8)/(x-8) - 1, and the second by 4x/4x - 1:

$\frac{x+7}{4x} *\frac{x-8}{x-8} +\frac{5}{x-8}*\frac{4x}{4x}$