sahaaaspam sahaaaspam

16-10-2021
Mathematics

contestada

prove that the value of the expersion y^2-10y+30 can only be a positive number
PLEASE ANSWER ASAP WILL GIVE BRAINLIEST

Respuesta :

mhanifa mhanifa

16-10-2021

Answer:

See below

Step-by-step explanation:

y² - 10y + 30 =
y² - 10y + 25 + 5 =
(y - 5)² + 5

Since (y - 5)² ≥ 0, the expression above is positve:

(y - 5)² + 5 ≥ 5

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Аноним Аноним

15-07-2022

Let's factor out

y²-10y+30
y²-2(y)(5)+25+5
(y-5)²+5

(y-5)² has least value as 0

Least value of expression is 0+5=5

It's positive no

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