Simplify the expression -4x2(3x − 7).

-12x^3+28x^2

Step-by-step explanation:

-4x3= -12

-4x-7= 28

x^2+x= x^3

Then, x^2 just transfers over beside 28.

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.