Question

Factorize : z² – 10z + 21 ÷ ( z – 3 )
Please answer ​

Answer 1

Answer:

(z-7)

Step-by-step explanation:

z^2 - 10z + 21

= z^2 - 7z - 3z + 21

= z (z-7) - 3 ( z-7)

= (z-3) (z-7)

Now, this result is divided by ( z-3)

[(z-3) (z-7)] / (z-3)

= z-7

the answer is (z-7)

Answer 2

Step-by-step explanation:

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