Which of the equations are true identities? (x^2+2y)(x^2-3y) A. }(x^2+2y)(x^2-3y)=x^4-6y^2

B. }&k^3-r^3=(k^2+r)(k-r^2)

the simplified form is

step-by-step explanation:

we want to simplify the expression,

let us change the middle bar to a normal division sign to obtain,

we multiply the first fraction by the reciprocal of the second fraction to obtain,

we factor to obtain,

we cancel the common factors to get,

we simplify to get,

the correct answer is b

correct answer is c. just did it

step-by-step explanation:

it's undefined because anything multiplied by 0 is 0. that said, 7 days is 168 hours

1.) 21

2.) 0.453

3.) 1.5

4.) 48

5.) $ 22

step-by-step explanation: