What is the interest rate on a savings account of $10,000 that earns $2,000 after 4 years? 110/11 cian​

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225

they used 313 gallons of paint

use distributive property on all like terms and change your signs if you have a double negative or if you have positive/negative

take the logarithm of both sides (the base of the log doesn't matter):

apply the exponent property - this says that :

distribute the log terms on both sides:

group like terms together:

divide through both sides by the coefficient on :

you can do some additional rewriting here using the properties of the logarithm to simplify things if you like: