2x2-3x-5=0 using quadratic formula

Mathematics

1 answer:

saveliy_v [14]4 years ago

4 0

This formula solve by discriminant (D=b^2-4ac)

You might be interested in

Farrah's goal is to use 281 gallons of water or less per day at her business. Her water bill showed that 4,497 gallons were used

stiv31 [10]

Yes she meet ed her goal because if you do 4,497(total gallons)/281 (the gallons she wanted to use) you get 16.

5 0

3 years ago

Write a sine or cosine function for the data set

dmitriy555 [2]

Answer:

though this is difficult i know you would get it. Anyhow im real tired... will solve later... gl

5 0

4 years ago

Can somebody help me with this

Lubov Fominskaja [6]

Nope lol , don't even know what the dang
question is

8 0

4 years ago

Step by step workout of ;<br> log x^3+log 5x=5 log 2-log 2/5

Charra [1.4K]

Answer:

x = 2

Step-by-step explanation:

$log \: {x}^{3} + log \: 5x = 5log \: 2 - log \: \frac{2}{5} \\ \\ \therefore \: log( {x}^{3} \times 5x) = log {2}^{5} - log \: \frac{2}{5} \\ \\ \therefore \: log( 5{x}^{4}) = log 32 - log \: \frac{2}{5} \\ \\ \therefore \: log( 5{x}^{4}) = log \bigg(32 \times \frac{5}{2} \bigg) \\ \\ \therefore \: log( 5{x}^{4}) = log \bigg(16 \times 5) \\ \\ \therefore \: 5{x}^{4}= 16 \times 5 \\ \\ \therefore \: {x}^{4}= {2}^{4} \\ \\ \huge \purple{ \boxed{\therefore \: {x} = 2}}$