If z=15, what would the expression z2 – 2z + 15 be equal to?

15

Step-by-step explanation:

z2 - 2z + 15

(15)2 - 2(15) + 15

30 - 30 + 15

0 + 15

15

Hey there!

z^2 - 2z + 15

= 15^2 - 2(15) + 15

= 225 - 30 + 15

= 195 + 15

= 210

Therefore, your answer is: 210

Good luck on your assignment and enjoy your day!

~Amphitrite1040:)

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.